Last night I started to have really bad cramps in my uterus. The pain started when my boyfriend and I were having sex. At first, it was a light cramping, but shortly turned into sharp pains and moved up into the right side of my ribs. At first, it hurt to take a deep breath, but that only lasted about an hour. It kind of feels intestinal, or like I may have gas that needs to be released. I thought maybe if I went to sleep it wouldn't hurt when I woke up, but it still feels like menstrual cramping. I don't know if this pain was caused from sex, or what. But I'd like to get some input from someone else. Thanks