Speaking of miracle pregnancies, my aunt was in remission from cancer, was in chemo-induced menopause, was on birth control to help regulate her hormones and had only had sex with her fiance twice in the previous six months (she had still not been feeling well from radiation/chemo) and found out she was pregrant days before her wedding (when she fainted during her final fitting)! She later lost the baby, but was okay with that since she was afraid her pregnancy was going to take her out of remission.
Weird things do happen.