hard And painful to get up from laying or reaching forward.

I'm just about 22weeks and I'm usually laying down on my bed watching TV....well when I try to sit up or when I lean forward to reach for something I'm finding that it puts a lot of pressure on my tummy and it hurts. Like for example if i'm sitting down with my feet stretched out and I try to touch my toes it hurts and I have a mild sharp pain go through my stomach. Is that normal??? Is this happening to any of ya'll? My tummy hasn't got all that big yet I dont think. I'm a FTM so I really don't know what to expect...