I am not dealing with this to answer one of your questions but had plenty interactions with people who (without making any direct comparisons) were struggling with something like that — tho not all of them were self defining as asexuals.

You started the hard work of unraveling yourself through therapy — this is a great start. Maybe there were already some mentions about self-appreciation from therapists side, if not, this might be one of the ways later down the road. Self-appreciation and self-love might be too broad and abstract concepts for you in a place where you are using words like “repulsed” about yourself, but they can be approached in the future, in a healthy way.

I want to address the other thing, which might be the even bigger issue. Plenty of people treat their sexuality as if it was a stone with equations and sacred rules to live by — while sexuality can be a pretty fluid thing full of surprises. It takes a lot of self-discovering to understand and explore ones sexuality, even if it is an actual asexuality.

All of the above takes time, my only advice for you (as I know nothing about you) would be to invest as much time as you can into yourself. Therapy is a part of that investment. Asking yourself hard questions, having doubts, all this is a part of a complicated process. It even takes time to trust that process of exploring the unknown territories.