Abdominal Pain?

Bree
I'm 23 weeks, 4 days now. On Tuesday I went bowling, which was cleared by my doctor. I used a 9 pound ball at first (my usual) it didn't bother me but I got a lighter ball anyways just to be safe. I got the smallest ball, which was 6 pounds. After playing 2 games we went home and I started feeling terrible pain in my lower abdominal area. I got home and felt him kicking, and he woke me up this morning by him kicking. I think I may have just pulled a muscle. I've tried soaking in a tub of water, using a warm cloth, and using my heating pad. Any other suggestions? It's gotten so bad I can barely walk myseld to the bathroom. My boyfriend has had to assist me all day today ):