I got my upper cartilage (helix) pierced almost 2 months ago and I have a stud in. The stud broke so I had to change my jewellery yesterday. It is a twister piercing and looks so nice but the little bump at the back (which has been there since I got it done) has it is expelling pus and is throbbing and a little bit red. It does calm down though. I am unsure if this is just healing as it's also scabbing and crusting but I'm also unsure as it could be infected? What can I do?