Right so i was being wanked by a girl and she got abit rough and some how tor me, she might of been wearing a ring i dont know and cant member

So i had left it for a few days to heal etc.. using cream. But when i try get a hard on it re-tares my foreskin and makes it very painful, then when it real heals the fore skin has become tighter and it like a ring going around my penis and it soon tares again when getting a hard-on.
Even when i have not got a hard on and try pull the foreskin back it tares.
Now ive had this problem for about a month and now im kinda needing to have sex.
Is it something i should go to the drs or getting a certain cream?
Thanks for the help