Suggest Treatment For Indentation Of Area Which Got Hit By Ball

I got hit by a lacrosse ball the other day. It hurt really bad. I just figured it would swell up and bruise, like normal, but it didn't. It hasn't done either. It doesn't hurt too bad unless you touch/push on it. And when u do, there is an indentation where I was hit. What should I do? Should I get it looked at? Is this normal? What could be wrong? Etc? I'm 5'10, 200lbs, 34 yrs old, and overall a pretty healthy & active person.