Equally important, your description of yoru skin lesions
is consistent with a number of skin
conditions other than KS. And as you have been told, your exposure a year and half ago was low risk for HIV, if I correctly understand that it did not include penile-vaginal or penile-anal intercourse.
Finally, I have to wonder why you are spending time and energy trying to figure this out on line. Presumably you have not had an HIV test, or you would have mentioned it.