In my opinion it's a 50/50 chance. How old are you? Because it can be very painful if your young. If your concerned you should go to a doctor. Good Luck!
If no semen went near your vagina, then you can't get pregnant by anal only. But if semen dripped down to the vagina after he pulled out or if he squirted it near your vagina if he pulled out while cumming, then there is a slight chance. Oh, and be careful wiping the semen, too. You could wipe it towards the vagina as well, which isn't good either.
You won’t get pregnant, but it is a good way to pass on blood borne diseases as tearing is common in anal sex. So regardless of entry point, always use condoms. Protect yourself.
Zero. Your anal canal is in no way connected to your uterus.
Considering the anus is a part of the digestive system and NOT the reproductive system, you have a 0% chance of getting pregnant. The only way to get pregnant is by having ejaculate enter the vagina.
Agree with the others. Not a chance.
That’s a normal thing to happen. You don’t have a chance at being pregnant if it isn’t vaginal. If I were you, I wouldn’t worry about it :)