Dear Gheny, hello
Mild headache will be relieved in few days to weeks time. Give proper rest to your body. This will heal you more quickly.
You should feel worried if any of the following symptoms occur:-
1. Persistent headache
3. Bleeding from nose or ears
4. Episode of unconscioussness
6. Irritability or confusion
7. Loss of memory
If you are in doubt or symptoms are persisting, you can have a scan done and consult your Neurophysician.