Confused..?

Rae • 21, TTC for baby #1, suffering PCOS, waiting for metformin/Clomid
Having come off the pill (was advised to take it to regulate periods because of PCOS, as I wasn't TTC) in October of 2012, since then I've only had about 5 menstrual cycles, generally coming every two months or so, so I thought I was finally becoming regular. However, they stopped around March of this year, and had nothing since, which is strange. I was used to waiting up to 8 months for a cycle, but this was before being on the pill, so going back to having nothing for months has been a bit of a let down.
​The reason for confusion is that instead of cycles, I've been getting frequently tired, sore boobs, been feeling sick and other strange signs, like finding small blood clots, but no major signs of period. I have taken several pregnancy tests, but all are negative, so I'm wondering if I'm just having a few months of particularly bad PCOS and Endo
​Had anyone else experienced this? Thanks x