Coughed on me

[1993Worried]

I was on my way home when someone coughed to my face,and some of his saliva flew direct into my mouth, if the saliva was mixed with blood and at that time I had my wisdom tooth coming in, I don't know if it had any cuts around it can that pose as a direct entry to the bloodstream?

[Chima7]

This is not a risk for HIV. But don't be surprised if you caught a cold or the flu from this situation because that could definitely happen.

[1993Worried]

Thank you and I understand, but I would like to have a more understanding, is it cause his saliva is able to inactivated the virus and the spit seconds it passes in air makes it weak? And what type of cuts or sores pose as a route

[AnxiousNoMore]

This answers all of your HIV questions, and if you can think of any more just reread about the 3. You had zero risk therefore  testing is irrelevant to your situation because you had zero risk. HIV is a fragile virus, which 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.
The only way to get HIV is if you did one of the 3. 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.