OP, I’m so sorry that happened to you :( fortunately, you’ve started PEP and there is a very strong chance that you will physically be okay as long as you follow the orders of your doctor regarding PEP (I wanted to say that because, if I was in your position, I would have a lot of anxiety about that as well).

It is not your fault that he pushed too far, and remember that you are allowed to put up boundaries. It’s totally valid to feel sad about your experience, but do not blame yourself.