Thanks for posting this query in HCM
Based upon the data that you have provided, it doesnot seem that you have serious underlying brain injury
. The severity of brain insult in patients with trauma can be juged by the associated complaints like loss of consciousness
, memeory problem, weakness of hands/legs etc. In the absence of these symptoms, the chance of missing a serious brain insult is less likey, though cannot be excluded.
I think you should get a CT scan
done. If it is normal, you will have to be on analgesics for few days..
The lump can be due to local bleed.
Hope this clarifies your query