I had a lot of Braxton Hicks and tight feeling and very uncomfortable around 31-33 weeks then all of a sudden it just stopped. It was not all the time but now 34 weeks I don't even feel pregnant sometimes it totally shifted. Maybe it's the position of the baby or ligaments stretching just do like the above poster said and get checked out just to be on the safe side
I'd go get checked! You could be in the early stages of labor. At this early along they will try to stop it, if it is. For baby's sake and your mental well being, just go get it checked out. Best of luck!