Cramping at 22 weeks. Help!

I was hanging out on the couch today and had some intense back, stomach, and groin pains. I thought it was from sitting in one position too long so I adjusted and even stood up and walked around but nothing helped. I'm now laying on my side in bed with a pillow between my legs. It's helping with the back pain but the groin pain is still there on one side and I'm cramping kind of sporadically.

What's going on? I thought maybe Braxton Hicks but I've heard they are normally painless? More of a tight feeling than true pain. Oh and baby is wiggling around so he seems fine. He didn't start moving until after the pain started. Help?