Now, if you have really recieved a positive result, it is either you haven't provided correct details of your exposure, there has to be a gap somewhere or your result is a false positive. Did you get a confirmatory (Western Blot) test done yet?
Consumption of infected fluid is not the right mechanism of HIV transmission in adults.
The risk which is graded as low to no risk for infants are due to possible under-developed integrity of their oral mucosa and epithelial lining, which is how HIV contacts the bloodstream, because HIV can only be transmitted when HIV binds to certain immune cells of the body via a specific primary 'receptor' on the target cells surface, called the CD4 receptor.
When you consume infected fluid, it goes in to your digestive system and the gastric acid will inhibit the virus. No scope fusion with the immune cell membranes. Hence, no RNA release nor reverse transcriptase. No infection.
The only adult risks for HIV are:
1) having unprotected, penetrative vaginal or anal sex, or
2) sharing intravenous drug needles
Nothing else, including the event you described, is a risk for HIV. Babies who nurse from an HIV+ mother can get HIV that way, though rarely. That is because they have underdeveloped immune systems. An adult has never, and will never, get HIV from breastmilk.
This answers all your questions and if you think of any others, then you can get the answer if you just reread about the 3.
You had no risk for HIV so your test was a waste of time.
HIV is instantly inactivated in air and also in saliva which means it is effectively dead so it can't infect from touching, external rubbing or oral activities. It doesn't matter if you and they were actively bleeding or had cuts at the time either because the HIV is effectively dead.
Only 3 adult risks are the following:
1. unprotected penetrating vaginal with a penis
2. unprotected penetrating anal sex with a penis
3. sharing needles that you inject with. Knowing these 3 are all you need to know to protect yourself against HIV. The situation you describe is a long way from any of these 3.
Even with blood, lactation, cuts, rashes, burns, etc the air or the saliva does not allow inactivated virus to infect from touching, external rubbing or oral activities. Doctors have calculated the risk from what you describe to be less than that of being hit by a meteor, therefore no one will get HIV from what you did in the next 40 years of your life either. The above HIV science is 40 years old and very well established, so no detail that you can add to your encounter will change it from zero risk.
people cough on your lips and door knobs so flu is to be expected at any time for billions of negative people like you. i would not tell your wife about this, since you had zero risk and you will alarm her and she will be very hurt.