Painful cramps

Natalie
I've been getting cramps for a while even when I don't have my period I get them a lot when I do excersise and I used to only get them then but now I'm getting them all the time I'm not due for my period for another 2 weeks yet I've got bad cramps as if I'm on my period and I know it's not coming early, has anyone experienced this, or know about it