Is it still possible something's wrong?

I don't have PCOS and I had a transvaginal ultrasound come back normal. Also had a pap that came back "normal" with the exception of HPV cells and BV that's been treated. However, I have severely painful menses to the point where it's crippling. I can often feel the pain in my legs too. I get lots of large clotting and tampons are painful for me. Ovulation is very painful as well. Hubby and I haven't been using protection since December 2013 and have been actively trying since August 2014. Am I one that just has unexplained fertility or are there any more tests that can be done to see if something's wrong? This is unsettling.