Infertility may be said to be “unexplained” in cases where the women is ovulating regularly, has open fallopian tubes with no adhesions or endometriosis. The man has normal sperm production and the postcoital test is positive. Intercourse must take place frequently, particularly around the time of ovulation, and the couple must have been trying to conceive for at least one year. About 10% of all infertile couples have unexplained infertility. Unexplained infertility simply means the doctors do not know why the couple is infertile it is a confession of medical ignorance.

Some possible causes of unexplained infertility are mentioned below :-

1. Fallopian tube abnormalities
2. Abnormal eggs
3. Trapped eggs
4. Lutel phase abnormalities
5. Immunological factors
6. Infections
7. Inability of sperm to penetrate eggs
8. Psychological factors

If no abnormality is found, your chance of getting pregnant without treatment with in years is about one in three. Taking treatment helps to increase the chances of your conceiving not only is the possibility of getting pregnant increased, but you are also likely to get pregnant more quickly.