Do you take anything for cramps for your period? If you take it now and it helps, cuz they say to take cramps med earlier rather than when cramps are hitting full force, because if you take an anti-inflammatory like ibuprofen, the cramps will be milder, they won't build up so strong. So if you are within a few days of your period starting, and a heating pad helps, you can be pretty sure of what you have. Right in the "crook" of your pit, right?