Trying to conceive can be one of the most exciting chapters of life. But when month after month passes without a positive pregnancy test, it can quickly become emotionally exhausting.
If you’ve been asking yourself, “Why am I not getting pregnant?”, you’re certainly not alone. Millions of couples around the world experience difficulty conceiving, and infertility affects both women and men almost equally.
The good news is this: many causes of infertility are treatable, especially when diagnosed early by experienced fertility specialists.
In this comprehensive guide, we’ll explain the 10 most common causes of female and male infertility, discuss when you should seek medical help, and explore the fertility treatment options available in Nigeria.
Understanding Infertility
Infertility is generally defined as the inability to achieve pregnancy after:
- 12 months of regular, unprotected intercourse if the woman is under 35 years.
- 6 months if the woman is 35 years or older.
Many people assume infertility is always a woman’s problem. In reality:
- Female factors account for about 35–40%
- Male factors account for about 30–40%
- Combined factors account for approximately 20%
- Some cases remain unexplained.
This is why fertility evaluation should always involve both partners.
Recommended Outbound Link:
World Health Organization – Infertility
https://www.who.int/news-room/fact-sheets/detail/infertility
1. Ovulation Disorders (The Leading Cause of Female Infertility)
One of the biggest reasons women struggle to conceive is irregular or absent ovulation.
Without releasing a healthy egg each month, pregnancy cannot occur naturally.
Common causes include:
- Polycystic Ovary Syndrome (PCOS)
- Premature ovarian insufficiency
- Hormonal imbalance
- Thyroid disorders
- High prolactin levels
- Excessive stress
Symptoms
- Irregular periods
- Missed menstrual cycles
- Acne
- Weight gain
- Excess facial hair
- Difficulty predicting ovulation
Fortunately, ovulation disorders are often highly treatable with medication, lifestyle adjustments, or assisted reproductive treatments.
2. Advanced Maternal Age
Age remains one of the biggest factors affecting female fertility.
A woman is born with all the eggs she will ever have.
As she ages:
- Egg quantity decreases
- Egg quality declines
- Miscarriage risk increases
- IVF success rates gradually reduce
Fertility by Age
| Age | Fertility Outlook |
|---|---|
| Under 30 | Excellent |
| 30–34 | Good |
| 35–37 | Moderate decline |
| 38–40 | Significant decline |
| Above 40 | Rapid decline |
This doesn’t mean pregnancy is impossible after 35—it simply means earlier fertility evaluation becomes more important.
3. Blocked Fallopian Tubes
Healthy fallopian tubes allow the sperm and egg to meet.
When they become blocked, fertilization cannot occur naturally.
Common causes include:
- Previous pelvic infections
- Untreated sexually transmitted infections
- Endometriosis
- Previous abdominal surgery
- Pelvic inflammatory disease (PID)
Many women don’t experience symptoms until they begin trying to conceive.
4. Endometriosis
Endometriosis occurs when tissue similar to the uterine lining grows outside the uterus.
This condition may affect:
- The ovaries
- Fallopian tubes
- Pelvic organs
It can interfere with:
- Egg release
- Fertilization
- Embryo implantation
Symptoms include:
- Severe menstrual pain
- Pain during intercourse
- Heavy bleeding
- Chronic pelvic pain
- Difficulty getting pregnant
5. Uterine Fibroids and Other Uterine Conditions
Not every fibroid causes infertility.
However, depending on their size and location, fibroids may:
- Distort the uterine cavity
- Prevent embryo implantation
- Increase miscarriage risk
Other uterine conditions include:
- Endometrial polyps
- Congenital uterine abnormalities
- Intrauterine adhesions (Asherman’s Syndrome)
6. Poor Sperm Quality (Male Infertility)
Many couples are surprised to learn that male infertility contributes to nearly half of infertility cases.
Problems may involve:
- Low sperm count
- Poor sperm movement (motility)
- Abnormal sperm shape (morphology)
- Complete absence of sperm (azoospermia)
Common causes include:
- Varicocele
- Hormonal disorders
- Previous infections
- Genetic conditions
- Smoking
- Excess alcohol
- Certain medications
- Obesity
A simple semen analysis is often one of the first investigations recommended during fertility evaluation.
7. Hormonal Imbalances
Both men and women require balanced hormones for successful conception.
Hormonal problems may affect:
Women
- FSH
- LH
- Estrogen
- Progesterone
- Thyroid hormones
- Prolactin
Men
- Testosterone
- FSH
- LH
Hormonal disorders often respond well to medical treatment once identified.
8. Lifestyle Factors Affecting Fertility
Modern lifestyles can silently reduce fertility.
Some of the biggest contributors include:
Smoking
Smoking damages both eggs and sperm.
Alcohol
Heavy alcohol intake may affect hormone production and sperm quality.
Obesity
Excess body weight increases the risk of:
- PCOS
- Diabetes
- Hormonal imbalance
- Ovulation disorders
Poor Diet
Low intake of fruits, vegetables, healthy fats, and antioxidants may negatively affect reproductive health.
Stress
Although stress alone rarely causes infertility, chronic stress can influence hormones, sleep, and overall wellbeing.
Lack of Exercise
Moderate physical activity supports hormonal balance and healthy weight management.
9. Unexplained Infertility
Sometimes, every fertility test appears normal.
Yet pregnancy still doesn’t happen.
This is known as unexplained infertility.
Possible reasons include:
- Egg quality issues
- Sperm function problems
- Implantation difficulties
- Subtle genetic factors
Modern fertility treatments can often help couples with unexplained infertility achieve successful pregnancies.
10. Medical Conditions That Affect Fertility
Several health conditions may interfere with conception.
Examples include:
- Diabetes
- Thyroid disease
- Autoimmune disorders
- Hypertension
- Sickle cell disease
- Chronic kidney disease
- Previous cancer treatments
Managing these conditions with specialist care can significantly improve fertility outcomes.
When Should You See a Fertility Specialist?
Many couples wait too long before seeking help.
Consider scheduling a fertility evaluation if:
- You’ve been trying for over 12 months (under 35)
- You’ve been trying for over 6 months (35 years and above)
- You have irregular periods
- You’ve had recurrent miscarriages
- You have known PCOS or endometriosis
- You have previous pelvic infections
- The male partner has a history of low sperm count or testicular problems
- You have undergone previous fertility treatments without success
Early diagnosis often leads to better treatment outcomes.
How Fertility Specialists Diagnose Infertility
A comprehensive fertility assessment may include:
For Women
- Hormonal blood tests
- Pelvic ultrasound
- Ovulation monitoring
- Hysterosalpingogram (HSG)
- Hysteroscopy
- Ovarian reserve testing
For Men
- Semen analysis
- Hormonal profile
- Scrotal ultrasound
- Genetic testing (when indicated)
A personalized evaluation helps identify the most appropriate treatment plan.
Fertility Treatment Options in Nigeria
Treatment depends on the underlying cause of infertility.
Available options may include:
Lifestyle Modifications
- Weight management
- Smoking cessation
- Improved nutrition
- Stress reduction
- Regular exercise
Medication
Ovulation induction and hormonal therapies may help address specific reproductive challenges.
Minimally Invasive Procedures
Some uterine and tubal conditions can be treated surgically.
Intrauterine Insemination (IUI)
A fertility treatment where prepared sperm is placed directly into the uterus during ovulation.
In Vitro Fertilization (IVF)
IVF is one of the most effective fertility treatments for couples experiencing infertility due to tubal disease, severe male factor infertility, advanced maternal age, unexplained infertility, or multiple failed treatments.
Why Choose St. Ives Specialist Hospital for Fertility Care?
When it comes to fertility care, experience, expertise, and compassionate support matter.
At St. Ives Specialist Hospital, we provide comprehensive fertility services tailored to each couple’s unique journey.
Our fertility services include:
- Comprehensive fertility assessments
- Male infertility evaluation and treatment
- Female infertility diagnosis
- Ovulation monitoring
- Advanced fertility investigations
- IVF treatment
- ICSI
- Fertility preservation
- Pregnancy care following successful conception
- Family medicine support
With experienced fertility specialists, modern reproductive technology, and a patient-centered approach, St. Ives Specialist Hospital has helped thousands of families move closer to achieving their dream of parenthood.
Whether you’re in Lagos or travelling from another state or abroad, our multidisciplinary team is committed to delivering personalized fertility care in a supportive and confidential environment.
Regular menstrual cycles do not always mean you’re ovulating normally. Male infertility, blocked fallopian tubes, endometriosis, uterine conditions, or subtle hormonal issues can also prevent pregnancy.
If you’re under 35, seek evaluation after one year of trying. If you’re 35 or older, it’s advisable to seek help after six months.
Yes. Depending on the cause, treatment may include medication, surgery, lifestyle changes, or assisted reproductive techniques such as IVF with ICSI.
Stress alone is rarely the sole cause of infertility, but chronic stress may affect hormones, ovulation, sexual health, and overall wellbeing.
The best treatment depends on the underlying cause. After a thorough evaluation, your fertility specialist may recommend lifestyle changes, medication, IUI, IVF, or other advanced reproductive treatments.
Final Thoughts
If you’ve been wondering, “Why am I not getting pregnant?”, remember that infertility is a medical condition—not a personal failure. The sooner you seek professional evaluation, the sooner you can understand the cause and explore the most suitable treatment options.
Many couples who once struggled with infertility have gone on to build healthy families with the right diagnosis, timely intervention, and expert care.
At St. Ives Specialist Hospital, our experienced fertility specialists are dedicated to supporting both women and men through every stage of their fertility journey with compassion, advanced technology, and evidence-based care. If you’re ready to take the next step, schedule a comprehensive fertility consultation and let us help you move closer to your dream of parenthood.
