A.  Yes, Metformin is ok - you will also need to check for egg formation, by transvaginal scanning of the ovaries - if there is a problem then drugs like Clomid will need to be given in addition with simultaneous scanning for eggs and timing sex with egg rupture - for further increasing chances of pregnancy. Success can be achieved in over 60% cases. In your case after pregnancy is achieved you will need more care to prevent abortion - that is by adding folic acid, rest, nutrition rich in proteins and vitamin supplements, no sex for first three to four months and vaginal progesterone suppositories to keep the uterus soft and relaxed - all stress needs to be avoided.