37 weeks today and cramping

I'm super uncomfortable because he doesn't seem to have any room in there anymore, Mainly when I'm sitting at work or in my car driving. Also I have a really strong cramp in my right side like I just ran a mile. Does it mean anything? I believe I've been having Braxton hicks as well so all of it together is killing me. I have no idea what actual contractions feel like so I'm questioning every little thing.