Wacky Period Forever!

To start, I've NEVER been regular, with the short exception of the three separate occassions I've tried to take BC pills. My cycle, via the last 5 years of tracking on this site, has been anywhere from 28 (on BC) to 63 days. When I started dating my boyfriend in December, I noted that I had 5 regular periods in a row, all occuring on day 33 (December-May). Now I'm at day 45 and no real sign of a period. My PMS this time around has been insane. I show signs of PMDD (mostly the panic attacks), and yet this cycle I only had one single attack when I usually have a good solid 3 days of attacks. About two months ago, I had taken Plan B as a result of a broken condom, but got my period in May on day 33, after taking the pill.

I guess my question is, am I alone in this? I have my suspicions of endometriosis, but has never been confirmed at gyno visits. It's quite frustrating, and I've taken way too many PG tests in my life than I'd care to admit. I'm 22, and not ready for parenthood. Any info/suggestions/help you can throw my way will be quite helpful!