Thanks for writing your query.
After reading your post, it seems that you had suffered from soft tissue injury
Headache with a bump after a head injury
can be associated nausea or vomiting.
If your nausea or vomiting is persistent it may indicate towards concussin injury.
It will take few days to weeks for recovery from concussion
Proper rest will speed up the recovery process.
Avoid any physical or mental stress. Avoid watching television, computers or even text messaging.
Also avoid driving till complete recovery.
You can take pain killer like Ibuprofen
one tablet twice a day after meals along with an antacid for relief from pain.
10 mg once a day will help to decrease the nausea.
If the symptoms persists, get a scan of your head done and consult a Neurophysician.
I hope this is helpful to you.