Female Infertility: Causes, Diagnosis and Advanced Treatment Options

Primary infertility refers to women who have never achieved a clinical pregnancy. Secondary infertility refers to difficulty conceiving after one or more previous pregnancies, whether they resulted in live birth, miscarriage, or ectopic pregnancy. Both types are equally valid medical concerns and deserve thorough investigation. Having conceived before does not guarantee the same will be possible again, as ovarian reserve declines with age and new conditions can develop over time.

Certain situations require immediate specialist referral without waiting the standard 12 or 6 month periods. These include absent menstrual periods (amenorrhoea), very irregular cycles occurring fewer than 8 times per year, known bilateral blocked fallopian tubes, previous pelvic inflammatory disease or tuberculosis, two or more miscarriages, a history of cancer treatment, known endometriosis, or any prior diagnosis of premature ovarian insufficiency.

Day 2 or 3 blood tests including FSH, LH, estradiol, AMH, prolactin, TSH, testosterone, and DHEAS provide a complete hormonal baseline.

Antral follicle count, ovarian morphology, uterine assessment, and identification of fibroids, polyps, or endometriomas.

X-ray assessment of fallopian tube patency and uterine cavity shape. Performed Day 7 to 10 of the cycle.

Serial ultrasound monitoring to confirm whether eggs are developing and being released.

Detailed assessment of the uterine cavity for polyps, submucous fibroids, and adhesions.

Direct camera visualisation of the uterine cavity. Combines diagnosis and treatment in a single procedure.

Direct visualisation of pelvic organs. Gold standard for diagnosing endometriosis and pelvic adhesions.

Chromosomal karyotyping, thrombophilia screen, antiphospholipid antibodies, and NK cell testing for recurrent miscarriage or failed IVF cycles.

For many women, targeted lifestyle changes can significantly improve fertility outcomes before any medical treatment is required. Weight normalisation improves ovulation in overweight women with PCOS and in underweight women with hypothalamic dysfunction. A balanced diet low in refined carbohydrates reduces insulin resistance and androgen levels in PCOS. Regular moderate exercise, stress management, cessation of smoking and alcohol, and correction of nutritional deficiencies (folic acid, vitamin D, iron) are recommended for all women planning pregnancy.

Ovulation induction uses oral or injectable medications to stimulate the ovaries to develop and release an egg in women who are not ovulating regularly. This is the first-line treatment for PCOS-related infertility and other ovulatory disorders.

Letrozole (Femara): Currently the preferred first-line agent for PCOS ovulation induction. Higher ovulation and pregnancy rates than clomiphene in PCOS with fewer side effects.

Clomiphene Citrate: A traditional ovulation induction agent. Effective in many cases but has anti-oestrogenic effects.

Injectable Gonadotrophins (FSH/LH): Used when oral agents fail or for more aggressive stimulation.

Metformin: An insulin-sensitising agent used alongside ovulation induction in PCOS.

IUI places a prepared sperm sample directly into the uterine cavity at the time of ovulation, bypassing the cervix and reducing the distance sperm must travel to reach the egg. IUI is recommended for mild to moderate male factor infertility, cervical factor infertility, unexplained infertility of shorter duration, and ovulatory dysfunction where timed intercourse has not been successful. IUI suits well-selected candidates; your doctor will explain what to expect in your case.

IVF is an effective fertility treatment for many causes of female infertility, especially when other treatments are unlikely to work. In IVF, the ovaries are stimulated to produce multiple eggs, which are retrieved and fertilised in the laboratory. Resulting embryos are cultured and the best quality embryo is transferred to the uterus. IVF is recommended for bilateral tubal blockage, moderate to severe endometriosis, failed IUI cycles, diminished ovarian reserve, and unexplained infertility of longer duration.

ICSI is a specialised form of IVF where a single sperm is injected directly into each egg. It is used when sperm quality is poor or when standard IVF fertilisation has failed previously. ICSI achieves fertilisation rates of 70 to 85 percent per egg and is now used in most IVF cycles worldwide as the standard fertilisation method.

ICSI is a specialised form of IVF where a single sperm is injected directly into each egg. It is used when sperm quality is poor or when standard IVF fertilisation has failed previously. ICSI achieves fertilisation rates of 70 to 85 percent per egg and is now used in most IVF cycles worldwide as the standard fertilisation method.

Hormonal conditions are treated with targeted medications. Hyperprolactinaemia responds excellently to dopamine agonists such as cabergoline or bromocriptine. Thyroid disorders are managed with thyroid hormone replacement or antithyroid medication. Androgens in PCOS are reduced with anti-androgen therapy when required. Hormonal optimisation before fertility treatment significantly improves outcomes.

For women with very low ovarian reserve, premature ovarian insufficiency, repeated IVF failure with poor egg quality, or advanced maternal age, egg donation is often the most realistic route to pregnancy, regardless of the recipient’s age. Eggs from a carefully screened, young healthy donor are fertilised with the partner’s sperm and the resulting embryo is transferred to the recipient’s prepared uterus.

Women who have experienced two or more pregnancy losses require a dedicated recurrent miscarriage investigation and management plan. This includes chromosomal testing of both partners, thrombophilia screening, immunological assessment, uterine cavity evaluation, and thyroid function testing. Treatment is directed at the identified cause and may include aspirin and heparin for clotting disorders, progesterone supplementation, surgical correction of uterine abnormalities, and in cases where chromosomal issues are the cause, preimplantation genetic testing (PGT-A) with IVF to select chromosomally normal embryos for transfer.