help worst cramps ever!!

Michelle
Ok so I am on the implant and for my last 4 -5 periods they had been coming every other week but then this one was late at first by that standard (I took a test and it was negative) and now his one finally came about 2 1/2 weeks after my last one. It started about a day ago and today my boyfriend and I had some pretty rough sex. About a half hour afterwards I started getting like the worst cramps ever and started feeling VERY nauseous and it's been going on for about the last 2 hours. The pain is like right between that upper part of your stomach where your ribs come together. I've never really been someone to get bad cramps but holy fuck this hurts. I've already got a hot pad on it and have taken 2 ibuprofen. What do I do?