As you know, you have posted on the wrong site. Questions about HIV belong on the HIV prevention site. I will do my best to answer your questions with this reply but, if you have additional questions or follow-up they must be on the HIV Prevention site. Sorry.
Without penetration this risk of acquiring HIV from your infected partner is virtually zero, even with chronic hemorrhoids or an anal fissure. Furthermore, the risk of HIV transmission is proportional to the amount of virus present in a person's blood and if your partner was on proper HIV therapy and undetectable, the risk of transmission, even if there had been penetration is also very, very low.
I would not have given you PEP for a non-penetrating exposure of the sort you describe. Further, it really bothers me when people give PEP without arranging for follow-up or give PEP in improper doses of for improper durations. If you have finished the PEP they gave you at this time, I would not restart if there has been an interval of more than a day. if you are still taking it and there has not been a break I taking it , you have decide whether you will take it for the proper 3 week duration or not.
Hope this helps. Your risk form the exposure you describe was virtually zero. EWH
Sorry, I think I miscategorized this and am not sure how to fix it.