I'm on the pill. I take it on time every day. May 22nd I threw up and we had sex about 4 hours later. I didn't get my regular 5 day red period but instead a 10 day of on and off brown blood, it was light. On the 7th day of that I bled red solid flow for about 5 hours. Now, June 9th I'm having bad cramps in my stomach.