There aren't any other STIs that affect the liver, and it sounds like you've had all the testing done.
I read through your previous posts, and what happened to you is called stealthing. It's a crime in some states/countries, and it's traumatic. I understand why you are still anxious about this. Have you ever had any therapy to deal with this?
I'm really sorry that this happened to you. Stress can cause a lot of gastro stuff, and that's not to discount your symptoms - they are very real and scary.
I hope you consider therapy. If you need to go get tested again to get confirmation that you don't have anything, go one last time and put it to bed. But only do it once, and get therapy. You deserve to find peace. :)