My husband was in a car accident last friday and has a big bump on his head still is this normal he has major headakes from it but had a ct scan in the hopspital the night of the crash and doctor said nothing internal.

Need observation. Yes possible , even if CT is negative , need to be under physician s observation for couple of wks ( for late developments ) . Follow the doctors advise.
Ans. Well the hematoma on the head will heal. Probably some whiplash causing the headaches. This will take a long time to resolve and may not. .