I do have Polycystic Ovarian
Syndrome so I do have cysts and
metformin actually helps quite a lot
in keeping them well, well, well, under control. But cystic teratoma I don't know about. If it's similar then maybe something like Metformin (i.e. Fortamet, Glucophage) would help. All in all I would ask my OB/GYN to refer me to a fertility specialist and I would have him/her address these concerns about a possible infertility situation.