Irregularity in periods, no periods, or abnormal bleeding which indicates that you are not ovulating and condition is clinically defined as anovulation.

Even though anovulation is usually be treated with drugs for inducing fertilization, it is vital to evaluate any additional conditions that can affect ovulation, like thyroid conditions or abnormalities of the adrenal or pituitary glands.

On ruling out other medical conditions, fertility drugs will be prescribed by your Gynaecologist to induce ovulation.

Drugs containing Clomid and Clomiphene are considered as first choice due to its effectiveness and are prescribed to women for years. In comparison to other infertility medications, they have the advantage to be taken orally instead of injection. It is used to induce and regularize irregular ovulation by increase in pick-up rate of egg by ovaries. Another drug named Letrozole is used for inducing ovulation.

Certain fertility inducers can make the cervical mucus hostile to sperm and as a result keep the sperm from reaching the uterus. In such cases, artificial or intrauterine insemination (IUI) is performed (injecting specially prepared sperm directly into the uterus -- to fertilize the egg) which also thins the endometrial lining.