I wasnt exactly sure where to post this, so i choose here cause i think its most closely related to my problem. About a week and a half ago, i went to my dr because i felt like i was having contractions *no i'm not pregnant, nor was i on my period at the time*. she did a pregnancy test, was neg and also ran a test to see if i had a UTI/bladder infection. it was negative also. She said after all the exams and tests were done she thought my uterus maybe be contracting, so she gave me a shot to stop contractions of the uterus. When i was pregnant with my son i had one, and it did stop them, it also stopped the cramping i was having this past dr visit. So first question, why was my uterus contracting when i'm not pregnant? also, i started my period almost a week and a half early *2 days ago* and i'm having the worst cramps and it is heavier then it has ever been. It feels as if i'm being kicked whever i move, the pains are bad enough to put me in tears, nothing is helping the cramps which arnt normal for me. Any advice?