never engage yourself in any anal and vaginal sex without condom in whatever the case until you enter in monogamous relationship .... what to do now:
1- testing for hiv and hbv ;
2- convience your regular partener to do the same thing;
3- from now only having protected sex with her even with negative tests.
4- testing annually or biannually.
For a situation where you are sexually active and partaking in unprotected sex with an individual who engages with multiple partners warrants an HIV test. You could take a standard HIV antibody test at 6 weeks from the day of your last exposure.
Also, just a light on the HIV sexual dynamics -
In certain high prevelance epidemics, a substantial number of men and women have more than one partner. Often these partnerships are over lapping in time or concurrent. Such sexual network appear to be risky because of 2 reasons:
1. Simply having multiple partner itself is risky.
2. Very high infectiousness in early phase of infection; if one partner becomes infected, he or she may rapidly infect the next uninfected partner and so forth.
Now for your second situation, oral is not a risk and it would not need testing.
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.
People cough on your lips and door knobs so flu and sore throat should be expected at any time. Move on from HIV theories.