Hey hun..
as i mensioned in our BBs, sounds like Braxton Hicks to me. Thats pretty much how mine are. At the moment your uterus is probably only up to your belly button, maybe a little higher.. so thats why youre only feeling it in the lower part of your tummy. I never had them with DS and not until about 28 weeks with DD. This pregnancy ive been having them for a few weeks now. Strange, uncomfortable and weird sensation.. but normal, and thats what it sound like to me.

xx