I think you need to discuss the inappropriate touching with someone you can trust. Even if that means a therapist as it is obviously still affecting you greatly. There needs to be healthy coping put into place to deal with this in order to start getting anything else sorted.

As far as your father, I understand the desire to know who your biological father may be. However, please realize that you have a man that was willing to step in and claim you as his own for all those years. He was trying to do a good thing and is understandably upset that you’re now calling him “not your father”. There are many children out there raised by non biological parents.

The issues from after you got pregnant are something else that a good counselor or therapist could help you deal with. I think you’d benefit greatly and be much happier in general if you’d deal with these past issues head on in a healthy setting.