Long periods and no ovulation

Sara
Let me start off by saying I have PCOS, but have always had regular periods. After being on BC for years, I went off about 9 months ago. I've been using ovulation tests and have only had one be positive out of about 30 tests. 
My periods have been ranging from 3-8 days, going on 9 days this cycle. 
I'm 31, and take all the vitamins, etc. my husband and I have been TTC for approximately 7 months, but nothing yet. Any advice? How long did it take you all to conceive, or how long have you been trying?