I had a copper IUD inserted in March of this year. I hadn't had any abnormal issues with it until last weekend. After a 30 mile ride (about 2 hours for me), I had uterine cramps. They felt just like menstrual cramps. Since my period was due to start soon, I thought it may just be that. However, four days later I haven't started my period and I've been having intermittent cramping that seems to be caused or worsened by riding my bikes (I commute, mountain bike, and road ride.). The longer I ride, the worse the cramping. I'm not sure whether the amount of time I'm spending in the saddle would have caused this problem pre-IUD because I'm riding a lot more this year than I ever have.

I'm heading back to the doctor to make sure the IUD is still in the proper place. If it is, I really have no idea what to do. I don't want to make the choice between cycling or writhing in agony for days every month

Does anyone else with an IUD ever experience this type of cramping issue?