I am Male 42, first time in life on April 1st nothing before and after, I did Vagina fingering for 2-3 mins only, realized having a small cut on finger after 24 hours (Image attached). Did mistake of reading content on Quora . I read it my have low risk, but from yesterday thinking what if that girl has semen in vagina from other HIV infected person, is that increases risk? Having sleepless nights and anxiety from April 1st. 

Welcome to the forum. I'm happy to address these concerns.---

Do yo able to see the image it is cut may be because of dryness. The incident happened in Vegas Casino at 2 AM in the morning the girl does not appeared to be professional but can not rule that out. I agree the possibility like that is rare just assuming the semen is present in vagina and  does it increases the chance of risk and how much I will request for fair and honest assessment. I think I had overthink plus analytical mind and had deep impact and with some clinical explanation I may able to feel better. I took three test as the probability of error was 0.7% on Quest Diagnostic eventually the same person getting the false result is more than 2M that is basically even if all positive people in USA take three tests no one will test negative. I will request some clinical explanation that might help me. 

Sorry, but we do not accept or look at posted clinical photos. It comes too close to diagnosing problems which we cannot do. And it doesn't matter what a finger wound looks like; it makes no significant difference in risk. And since your test results PROVE you do not have HIV, your risk at the time of exposure is irrelevant. You could have told me you mainlined known HIV infected blood; I would still advise you were not infected.---

Thank you sir, basically do you mean the Semen has less virus than blood and even blood is there the risk is low, that is why you provided the relative comparison. Just now I observed my bottom part of tooth being whitish and sharp I had recent change of toothpaste for 2 weeks could that be it or in anyway it could be HIV symptom?

My Analytical mind may pacify if you provide risk possibility increase contacting semen vs vaginal fluid with the cut finger during vagina fingering. Now when I read it your comment I guess you are explaining the test results overrides the incident. I am knowing that but having difficult accepting it hence just trying to understand is there a difference of risk between contacting semen vs vaginal fluid with the cut finger during vagina fingering.

I said nothing about the amount of virus in semen versus blood. They're about the same.---
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That completes the two follow-up Q&As included with each original question and so ends this thread. I hope the discussion has been helpful.---