Okay gals, I have a weird thing going on sometimes when I run. Yesterday (and a couple of times before), I started getting cramps in my abdomen on the lower left side. Sometimes I can run through them, sometimes I have to stop and walk. Occasionally I get the same type of thing on the right upper side, but I think that's just breathing cause it only happens when I'm pushing it. The ones on the lower left have no specific pattern to say when they come on or what gets rid of it, and it doesn't happen every time I run. Yesterday it made me cut my run short, so I tried again today and did 3mi in 35minutes with no cramping at all. Do you guys have any ideas, because I don't?