L.B.
My son fell and bumped his head alot while crawling; I believe it's normal. I said that God must make their heads tougher cause he still loses balance while walking and falls and hits his head. He hit his head alot in the crib too, so I guess it's normal. IF you are really concerned, you can always call your ped for backup but I wouldn't worry about it since your house is babyproof.