Ok I'm 23w2d and I think I'm having them my stomach keeps tightening and releasing throughout the day...When should I really start to worry?
I never had them but friends of mine started having them half way through their second trimester and described them as a rhythmic tightening and releasing. Uncomfortable but not super painful like a contraction. But Pamela is right , they can happen at any time (sorry, think I just repeated most of her post. :>) good post Pamela!)
They can start at 6weeks but you wont feel them until about 15weeks:) and it feels like a tightening in your belly and pressure. My belly gets super hard it doesnt hurt too much just uncomfortable.