First time....

So I'm 38 weeks pregnant and for about an hour now I've been experiencing the feeling like I'm about to get my period..I would say cramps but they last for a little bit then go away and come back. I've had braxton hicks since 34 weeks but these feel a little different. It's hard to explain but it just reminds me of the feeling before I got a period it's all around the lower part of my belly what could this be?

Sorry, I feel stupid..I've had one false alarm last week and it's my first time so I'm not sure what I have to be feeling or looking for šŸ˜–