Actually, do be cautious - if this cramping continues or gets worse, go to the ER! This happened to me after sex with my hubby years ago - I had this terrible cramp around my ovarian area - it got worse and turned to pain. I went to the local clinic, where they sent me to the ER - at this point it was so bad I couldn't drive and had to call my brother to take me. At the ER they did about every test they could think of and kept telling me they couldn't find anything wrong - until they finally did an ultrasound of my ovaries. It showed that my ovary had ruptured and was bleeding into my stomach. After the surgery, the doctor told me that if I had waited a day or two longer to come in, it would have been too late. Don't want to scare you, just want to warn you to be cautious of increasing pain, because that can be serious!! However, cramping after lots of sex is common, just as the other ladies have said - I've experience that too. Just always be mindful and know what's normal for your body. :)