Conceived frat twins on 1st round of clomid, after investigative laparoscopy, hysteroscopy, and ovarian diathermy (ovarian drilling). Tubes were open, but diagnosed with enometriosis (taken care of in laparoscopy), and PCOS. Twins also run in the family so we weren't too surprised to find it was twins, I think we were more surprised that we were actually pregnant and had overcome our struggle with infertility!