Contractions feel like a tightening that usually starts above your bump and works it's way down. Saying that though you might not feel them in your tummy but more your back. If you have been having Braxton Hicks contractions already then they are like those to start with but unlike Braxtons these will get stronger. If when you have a shower or bath and you find they stop then I would say they are Braxtons.

LOL. Of course I just realised that you never said you were having them just wanted to know what they felt like