Braxton Hicks or the real thing?

So I’m 37+2 and everything has gone pretty smoothly so far.

I woke up at 3.15am to serious period type cramps which lasted for about 20 minutes. Then it ended and I haven’t felt anything unusual most of the day until about 6pm where it happened again. It’s really low down and my baby goes crazy with movements after it happens.

I’m thinking as it’s not regular it’s probably just Braxton Hicks but I’m getting nervous! 😱😱