I'm unsure of what this cramping is.

Hey everyone. Got a question for all of you... I am 12 weeks and 3 days and just found out I am expecting a little boy. Today, I have been having weird cramping I'm not used to. It kind of feels like extremely mild uterine contractions. I think it might be gas cramps? But I'm not passing gas, and I don't know what has cramps feel like. I am a high risk pregnancy so of course I'm going to be worried over the smallest things. My fiance and I have picked out a name for our son and everything. We would be absolutely devastated if anything happened to him. I was wondering what this could be? It's right around my uterus and its definitely a cramp of some sort. Is this normal? What could it be?