Hi..
Thanks for the query..
I have gone through your query and can understand your concerns..
As per your complain it seems that due to hitting head to head with your friend there has been
injury to the soft tissues and rupture of superficial blood vessels leading to accumulation of blood into the soft tissues causing bruising..
Hard lump seems to be due to
hematoma formation is a harmless
tumor like mass formed due to spillage of blood from ruptured blood vessels leading to accumulation of blood into the soft tissues forming a lump..
At times the hematoma gets localized and encapsulated and forms a firm hard lump that can take a long time, say a few months to resolve, but it generally tend to resolve itself..
Pain and swelling was due to inflamed tissues only..
I would suggest you to do alternate warm and cool compresses over the area..
In case of no improvement in a month consult an Oral Physician and get evaluated..
Hope this information helps..
Thanks and regards.
Dr.Honey Nandwani Arora.