First time anal!

Ellie • 17 Years old ! Taken by boyfriend for one year now

Well we did it it wasn’t planned just happened and boy was it a nightmare. We agreed to never do it again. I’m scared because it wasn’t planned he wasn’t wearing a condom...could he contract anything? Also my butthole still hurts and is super tender... how long will that last? Did he tear it? I think it’s a different too then before as it was this one red sentsitive spot that hurts to touch.