Hi Gilth,
Welcome to the site diagnosed or not. You will find a lot of great info. here. I would have to agree with the other's that it doesn't quite follow an AS path as windy as that can be. Possibly autoimmune though. My sister has Lupus and wow she can have some weird symptom's! She had her belly button ooze once also. You need to have a Rheumatologist address your symptom's.
Your anxiety is possibly another animal all of itself. I was the unfortunate victim of an attempted murder and suffered 15 year's with anxiety attack's. Once it is triggered, it is a beast to put back down but it can happen. I haven't had any anxiety med's or attack's in 4 year's. Even when my pain is at a 10, no real panic attack. You anxiety might have nothing to do with your pain symptom's. I wish you luck friend.