HIV is fragile. Particularly in your scenario for a risk to be contemplated, only if there was large quantity of blood and it was poured inside of your anus directly with out any contamination with saliva or interference with environment.
Since the above stated wasn't the case. Therefore, there is no risk. Testing wouldn't be recommended.
This answer will not change. Saliva has enzymes in it that inactivate the virus. This is why oral sex is not a risk. And fingering is not a risk because air also inactivates the virus. Therefore, saliva as lubricant on the finger clearly is not a risk.
Unless you have unprotected vaginal or anal sex or share IV drug needles, you do not need to worry about HIV.
Saliva does not transmit the virus, even with blood. Once exposed to air, HIV is neutralized and unable to infect.
The only ways HIV is spread are:
-Unprotected anal/vaginal penetrations.
-Sharing needles to inject drugs.
-Mother to child.
All the best.