I had a similar experience and remember how frustrating it is- you finally get to TTC and you still feel like you're WTT.
When I got off the pill, which was July 2013, I wasn't having real periods- just some spotting every now and then. My first GP thought my body was just regulating from being off BCPs, but ran the blood tests. She said they came back normal- but they weren't done on CD3 as I didn't have a CD3 with no period! I told her I had always had irregular periods and she referred me for a transvaginal u/s which they said was normal and didn't show PCOS.
I finally had a period longer than a day in Feb 2014, though I think it was everything just finally building up too much in there and coming out instead of after ovulation. But, I finally got Day 3 tests done on CD3, and then I did have high testosterone and LH indicative of PCOS. My GP put me on Metformin, and since then I've had long cycles (about 40 days), but regular periods.
In Oct 2014 I saw a private fertility specialist who did another ultrasound on me and said I did have polycystic ovaries too. She said that it was a combination of me having a lot of follicles from PCOS, but also less follicles due to the normal effects of aging (I'm 38) that balanced each other out to make it seem like I have a normal amount of follicles. She put me on 50mg of Clomid, and we conceived the first month I took it (though unfortunately had a mc at 6 weeks).
So, the short story is, make sure if you have PCOS that they're doing the tests at the right time and interpreting them correctly. The good news it's a fixable problem for a lot of people, so good luck!