Cramping excessively!

Dani

My period ended a week and a half ago. I have been cramping a week. I haven't technically ovulated yet this month. Used Pre-Seed last month one time and AF showed. I don't usually get PMS symptoms until ovulation is done. I'm tired, moody, cramping, nausea, bloated, etc. Even my pants feel like they are tight and pushing against something hard.

Help!? I don't get it! TTC for 8 months now.