Starrysky- I had secondary infertility....3 unexplained mc. I don't ovulate after i mc, and i had really low progesterone. I was put on clomid, even though i concieved every bub in under a year. My DS was when i was 18 and DTD 2x without a condom, i was on the pill.....and the second cycle that i had ever had sex. Had a perfectly healthy little man. And then nothing but trouble since!
I would get checked out, and if you aren't Oing they'll probably put you on clomid.
Good luck, and i hope you get your BFP soon hun xxxx