Owww!

I worked out for about 10 minutes on Monday. Tonight I tried to do my first real work-out since I got in my car accident on January 9th. I started out on my ball. I tried to do sit-ups holding some light weights. After two minutes I got really sharp pains. It's hard to describe where. It's on my right side on my chest kinda on the side of and under my boob. So I dropped the weights and tried to go on. The pain kept getting worse. So I got off the ball and moved to the floor. Some exercises were ok. The pain was still there, but not sharp. Every once in a while I'd do something that would start the pain shooting again. I got a 20 minute work-out in, but here I am 10 minutes later and I'm still in a lot of pain. I thought I was feeling all better since my whiplash, but now I have my doubts :(