Dear Covington, hello.
any hard object hitting the head area can result in 'bump' because of the structure of the skin of the scalp
. There is no need to worry unless following symptons occur:-
1. loss of conscioussness
5. difficulty in walking
6. persistent headache
7. memory loss
If none of the above symptoms are present, no need to worry. Headache will go in a few days to weeks.