Thanks for your query. Based on the facts that you have posted it appears that you have sustained injury
to your frenulum
while having dry vigorous sex.
Please do not worry please apply pressure bandage and to stop the bleeding there is no need to be panicky about it.
You can consult qualified urologist
or general surgeon
tomorrow for clinical examination . Mostly you may not need any suturing. It will heal up naturally within a week or will need to be sutured