I want to tell him about the fake pregnancy test and medical bill. What should I do?

Phew,finally got through reading it.This is weighing heavily on your conscience so deep down you know what you have to do.Do you think if you kept quiet that the bad feelings would go away? Your friend doesn't sound to supportive of you if she's doing this just to get her money back.The answer to all this really does lie with you. For peace of mind do what your conscience dictates. Good luck!