Feeling lousy

Today is the first day not ovulating. I had sex everyday of ovulation. I've got trapped gas cramps, pinching in my stomach right across my belly button, passing gas, burping, mild consistent headache for 5 days. I don't think I'm pregnant, guess I'm just wondering if anyone knows what's going on with my body our if there's a small chance I am pregnant and can relate. I want to know why I feel so lousy.lol