My left tragus is swollen, really swollen, no pain but if I squeeze it really hard I can get a white pus out of it. Swelling goes down but comes back?

Tragal cyst. You may have a tragal cyst or infection. I would see an ENT Dr for this,as you may need to have it drained.
Inclusion cyst. Sounds like you have an inclusion cyst. Best to see doctor to have it excised and stop the cycle of swelling and draining.