You are sounding just like me Jenn!!

I would say that they are braxton hicks contractions. I am getting them too and was starting to worry - but then remembered I had them about the same time with Liam. They started off like yours and lasted for almost 24 hours then wore off. I am getting them intermittently now and it is definately a period pain type of pain with associated tightening of my uterus.

If you are worried, I would suggest seeing a doctor just to make sure that they are indeed just bh.

Best wishes to you