Welcome to HCM.
The chances of transmission of HIV
through penetrative sex with a HIV positive partner is around 0.3-0.5% only. With oral sex
it is almost negligible.
Having abrasion over your genital and getting touched by a person with unknown HIV status is almost nil, even with or without any wound in her hands.
So don't imagine remote things and relax yourself. If you are disturbed much, get tested for HIV yourself after 3 months to clear your mind.
You will find that you are HIV negative only.