DEAR DOCTOR K: I have endometriosis. Could this affect my fertility?
DEAR READER: Endometriosis can affect fertility -- but not in every case. Let me explain. Endometrial tissue is the inner lining of the uterus. Normally, that's the only place in the body where it grows. However, with endometriosis, the same type of tissue also grows where it shouldn't -- in places outside the uterus.