12 weeks and may be having contractions....

Jolanda • Sidney Henry IV 💙 10/10/10 Quentin Amaru Henry 💙11/23/11 Kobe Navorro Henry💙 4/26/16 Baby #4 due 9/3/18

So I’m 12 weeks almost 13 and I think I’m having contractions. This is my fourth baby you would think I know how they feel right lol well these kind of “contractions” takes my breath away a little and makes me feel like I’m having a mini panic attack. I can feel the bottom of my stomach tighten just a little and it’s very discomforting. I’m in the military and I’ve had these feelings before with my last pregnancy and I just started back working at my new duty station. I’m just wondering what could this be? Am I going into preterm labor again? Like what is it? When I tell the doctor about this he says is just my blood pressure. Has anyone else experience this before?