I am experiencing pretty intense cramping the past hour. They feel like the period cramps I used to get when I was a kid that left me lying in bed with a heating pad. The only thing is I had my period 15 days ago so it's not due again for at least another two weeks. So I'm confused. We are trying to have a baby so we're having unprotected sex regularly. I'm hoping I'm not having a miscarriage (it hasn't quite reached that painful yet). I had one around the end of September and still not pregnant yet. Anyone know what this could be?