I have a lump on the middle of my chest , it s been there for over a month now, recently it s started to get bigger and coloured red. It started leaking puss, disgusting as it sounds I squeezed it and it would not stop pussing. It s been a week since then and it s still pussing slightly when I squeeze it. I m becoming quite worried now, I m thinking it could be an ingrown hair , any help out there please