Past two weeks I've been cramping and last Saturday I thought I started my period (havent had one since last September when I got my mirena) and then it lasted about 6 hours at light bleeding. After that just random very light spotting. Today still having cramping here and there. Ever since Monday afternoon ive been super sick feeling (almost like the stomach flu). No puking (definitely feel like I could) but a lot of diarrhea. Finally slowing down on the diarrhea today but still just kinda feel off. I've had a mirena since September 2014 and never had this happen before. I had consistent unprotected sex with an ex before May 15 (when we split). Should I take a test or should I just knock it off to something else? Also noticing nipples and boobs seem softer/bigger the past few days.