How come every time i bend over i get a harp pain in my lower stomach it is every wear in that area or when i sit up but when i lay i don't fel any ?

It Hurt Belly Much?: That's hard to tell without seeing you, your body shape and size, and know what you've been doing lately activity-wise. On the surface it sounds like it may be a strained muscle or maybe a hernia but really in this case it would be best to be examined for a definitive answer. So, it this lasts more than two weeks or starts getting worse, see a doctor.