Ovulated 6/14. Used the withdrawal method every day around ovulation, then 6/16 I started having mild stomach pain. Middle and upper area feel uncomfortable like in a knot, it's hard to explain. It just comes and goes through out the day. Also have lost my appetite. Now, when I eat I feel nauseous after. BUT, I got my period, I think. I'm on the 3rd day. It is a bit less heavy and red. I took a pregnancy test bc of the symptoms I feel and it was negative.

Anybody that can relate? IDK if it might just be something else, or if I'm pregnant??? Help!!!