Polycystic ovarian syndrome is a not very uncommon cause of infertility among women in their reproductive age. The syndrome causes alterations in the function of the ovaries and also the rest of the reproductive system. Not all women with polycystic ovarian syndrome are infertile, and some of them can get pregnant without any professional aid, but in other cases the disfunction of their reproductive organs and the imbalance of their hormones is so big that they cannot conceive naturally.
The unusual level of androgens and estrogens in the body interrupt the menstrual cycle and produce changes in the pattern of periods and endometrial proliferation, which are fundamental for the impantation of the embio. Also, some eggs might not be released in proper time from the ovaries, which makes it more difficult for the woman to conceive naturally. If you have been trying to get pregnant for a while but failed, consider consulting your doctor.