First session, the therapist is going to want to know about family and friends as intake. She hears about the boyfriend, she sees a black eye...yes, she could well make that leap.

She'll also probably ask you why you're there. That would be a chance to take the bull by the horns. Tell her about your panic attacks and that you have hurt yourself during them, the black eye being the example. Just a thought, especially if you panic frequently and end up injured.