I've been advised to ask about the hepatitis related question in this community so ignore the hiv part.
The area I work has one of the highest HIV and hepatitis rates in my country, I am always surrounded by IV drug users. Today I noticed what I can only explain as smallish amount of blood on my hands, I washed this off immediately. The problem is I've been rubbing my eye and also my chest due a spot which is open. I checked my white shirt and there is no blood, just puss so it is not from the spot. I don't know where this blood has come from or how long it was on. I'm so worried about hep c and hiv.
I always have unprotected sex with my girlfriend, I am worried about putting her through danger. I understand I have a level of OCD so sometimes I don't know when I am being realistic and when I am being irrational. This is driving me mad and even making me depressed. I absolutely hate not knowing where this has come from and how it has ended up on my hand. Is this a risk to worry about knowing I have been rubbing my eyes, scratching an open spot and eating whilst it was present? If so what are the theoretical percentages of transmission if known?