Had you been penetrated you would have known without a doubt. You wouldn't be wondering.
If someone penetrates your anus it's obvious so I've been told.If you believe that you were penetrated then test but from what you describe i doubt you were.
How will you know if there indeed was a penetration? Because my *** feels a bit sore now but I don't know if it's because of the friction or because of the scratches.
That's still not a risk & you would have known if you were penetrated.
The thing is, I know I scratched the sides of my *** because it was itchy. So I afraid of the transmission through these scratches and I was not sure if there was penetration, although I tried not to let him enter.
No unprotected penetration means zero risk.