Toilet paper incident

I am little bit paranoid when it comes to HIV, and the question that I am about to ask is kind of difficult and complicated.
Few weeks after I took an HIV test (it came out to be negative) I went to a public restroom at a dance studio where I was practicing. I used the restroom and then I noticed that there was no toilet paper, however, I used a little piece of toilet paper that was in the trash can ( I know it sounds disgusting). The toilet paper was dry, it had no stains of blood,or anything. Also, my anus was clean, with no cuts, or bleeding. What are the chances of contracting HIV in this situation? What if the paper contained dry semen or dry vaginal fluids? Would I need to take another HIV test? I cannot go through another test, they affect me so much.

[dude_hk]

You have NO risk of HIV at all from using a used toilet paper from trash can in a rest room.
NO need to test.

[Zillinger_11]

ZERO RISK!