Short answer. Near zero. Stop worrying.
Longer answer: As we say several times each week on this site, attention to symptoms is a bad thing to do. Symptoms are non-specific and most people who have symptoms have something else, usually a community acquired viral infection which is not HIV or STD. This is even more true for you since many of the symptoms you describe are not suggestive of the ARS.
Furthermore, your calculation of risk might be correct if all of the girls had HIV. The fact of the matter is that most likely, none of them did.
You need to stop worrying. You do not have HIV. I have never seen a patient who got HIV from receiving oral sex alone. You will not be the first. If you must, get one HIV test, you are now more than eight weeks since your last exposure and therefore are at a time when 98% of tests which would turn positive have done so. then, no more test--again--you did not get HIV from the exposure you describe. EWH
i have to say that this site is really amazing and i think your work is very good i wish you the best of luck in your life doc but my concern was only about the high fever i got 6 and a half weeks later and the oral sex i got from the girls and i think in one of my encounters my penis was in touch with her tonsils for a sec only (deep oral) so i thought that was risky plus in some of my encounters i had a cold while i was having sex so does that put me more of a risk since i have a cold.