Back in 1996 I was diagnosed with "unexplained infertility". I was prescribed clomid and fell pg on my third cycle. Since my DS2's birth (way back in 1997), I have never used birth control and have had other attempts at clomid with no success. In 2006 I was diagnosed with PCOS, prescribed metformin (diaformin), weight loss, more clomid, had polyps removed, diagnosed with endo, more clomid. In 2007, one month after taking clomid (didn't fall on clomid - i think i had five cycles then) I fell pg, however this ended in m/c. Been on clomid again since then and also on tamoxifen (which is used like clomid for infertility) still TTC.

Good luck with whatever option you choose.