Thoughts

My legs have been super achy today. Like I climbed a mountain or something and I haven’t done anything out of the ordinary so they have no reason to be this way. I went to lay down for bed and got a super bad cramp like a period cramp. Now I’m having lower back pain and a tightening pain in my stomach but it’s on the right side only. Are these Braxton Hicks? I’m a FTM and I’m 31 weeks today. I haven’t felt this before so I’m curious.