I forgot to say this... I had my son last july, and I had bleeding right after my son was born, and 4 mths later I got on the depo shot. And all my bleeding stopped because of the depo. And my last shot I was suppose to get it in this past may, but I never did. Then my periods came in june, and the were heavy, and clots. And there still doing this. Not as heavy as they were. But the pain comes around when my periods are suppose to start.

It sounds like ovulation pain to me........On average ovulation occurs 14 days before your period begins, and for some women during this time they either feel a sharp pain or a dull throbbing pain in the lower right hand side of the abdomen.....This pain can last for a few minutes up to a few days.

I have been having similar pains for the past 5 months but mine are at opposite times. I get the pain right after my period and a week before my period comes and during it I am virtually pain free. When I went to the doctor they asked me if the pains start around the time I ovulate and end after my period. The reason they were asking is because they thought it could be endometriosis. Endometriosis has a few other symptoms such as irregular periods and sometimes no period at all. Visit medlineplus.Com for a bunch of information on endo and other possibilities.
Feel better!