I have very severe PCOS as well. I would bleed for 6 months straight (VERY heavy, had to miss chunks of HS), would stop for a few days and bleed another 6 months. Then the OB put me on BCPs, I went off of them and never had regular periods, though, thankfully, no more 6mo ones. We started TTC 2 years ago and unerwent an HSG, surgery (for gallbladder, she wouldn't let me on drugs unless I had it done) and a lot of provera. I was on provera for 6 cycles to get regular, course, I had to take it to stay regular as well. After my HSG, which dertermined that my tubes weren't blocked (woo hoo!) she put me on 50mgs of Clomid. I ovulated my first cycle of it, but did not fall pregnant. The next month I took another round of 50mgs and went for my blood test. They told me I had NOT ovulated that month. They gave me provera to bring on my period and wanted me to take 100mgs of clomid that cycle. I held off on the provera, just in case, cause I FELT like I had ovulated. I took a HPT and it was negative, so I took the provera. DH and I talked about it and decided that I wouldn't take the clomid cause I hated what it did to me (how I acted, felt, etc) and I couldn't even imagine how 100mgs would be. We figured we would wait two years (or more even), stopped the DCF adoption process we were doing (homestudies and such) and concentrated on ourselves and our pets. I had come to terms with the fact that we may not have any kids, ever and was okay with it. When my period was 4 days late after taking the provera DH convinced me to take another HPT...and I got my BFP. I know it sounds cliche', but once I stopped worrying and feeling so disappointed, I got PG. I guess I had ovulated on that last cycle of clomid...just 2 weeks later than they thought I would! Don't give up hope, it'll happen eventually (even though I know that it sucks to wait). You're definietly not alone!