Hi there, Emm5, and welcome to Scarleteen.
It's hard to answer questions about virginity, because it's more of a cultural concept than a medical one; there's no one universally-agreed-upon definition of what virginity means. If to you, "virginity" means "I have never had vaginal sex," then I don't think this would qualify; this wasn't a case of you choosing to engage in vaginal intercourse. I don't think it would be kind or fair to you to consider yourself no longer a virgin based on something that sounds like it was probably an accident, and definitely not something you chose for yourself.
Anal sex
is sex, so if your understanding of virginity is based around not having sex at all, I think it's important to know and understand that you're having sex already.
(For some more information about virginity and how it's difficult to define, these two articles are great places to start:
20 Questions About Virginity: Scarleteen Interviews Hanne Blank and
Magical Cups & Bloody Brides: Virginity in Context.)
I'm sorry to hear that you're still bleeding; it sounds like this was a very forceful and painful experience. Hopefully you can talk to your partner about being more careful in the future, and he'll really hear and respect that. If you find that you're bleeding a lot for more than a few hours, then it's probably a good idea to check in with a doctor, and it's important to let everything heal, with no pain or bleeding for at least a couple days, before the next time you have any kind of sex.