Would you take a wait and see approach or take him/her to the doctor right away?

LO was playing around while standing on the sofa and catapulted off the side onto the hardwood floor, face first. The sound was so loud. She cried for a minute and had a bump on her forehead. She seems back to her normal self so i'm not worrying too much (I know the usual drill since it's not the first time she has taken a spill) but this one seemed to really hurt. She seems a little more shaky on her legs (she's tripped a couple of times more easily), which is the only thing that's worrying me.

Would you just wait and see? Be more concerned?