26 weeks and having pain...Braxton Hicks??

I am 26 +2 and started having a decent amount of pain today to the point I need to stop walking or sit down. It comes in waves which made me think maybe Braxton Hicks? But it is on the sides and bottom of my belly and I can’t clearly identify the beginning and end of each contraction. It hurts to stretch in any way like my muscles are stuck being tightened. Just getting in and out of the car is painful as well as rolling to my other side in bed. If I sit or lay the pain isn’t as bad. I am trying so hard not to panic, but this is my first pregnancy, so everything new makes me a little paranoid. Just want to know if anyone else had experienced something like this or if you think I should make a doc appointment tomorrow.