Welcome to the forum.
Your opening assumption is correct. Nobody has ever caught HIV in a public toilet unless they had sex or shared injection equipment while there. Contact with blood or body secretions in the environment never results in HIV transmission; there would be no risk if you never cleaned the seat before use. And no, the wet handle and cut on your finger are not plausible as risks, even if the wetness was someone's urine, semen, etc. Finally, blood in the toilet water also would not be a significant risk.
So no worries at all. Please don't be concerned about it.
Regards-- HHH, MD
Thank you for your response. Very helpful. One last follow up ... I recently put my contacts in my eyes at the gym after touching the wet sink handle without re washing my hands. Any HIV risk there even if trace amount of blood present? Did not see any though. I have been seeing a counselor about my OCD and it has helped, but was curious about this specific incident. Thank you
If your contact leneses came into contact with HIV infected blood, you could catch it. But what are the chances of that? Of course they are zero for all practical purposes.
Whenver an anxious person dreams up a potential risk scenario, often there is a theoretical potential for it. That this has never happened and people with normal thought processes don't worry about such things. I recommend agaisnt testing, that you continue with your OCD treatment and counseling, and that you do your best to ignore thoughts about theoretical but essentially zero risk events. In any case, there is no point in askin about them on this forum. The answer will always be the same.
This thread is closed. I won't have any further comments or advice.