I have a hard spot under the skin of my left underarm about the size of a blueberry. It does not have a head or any visible sore and is completely under the skin and does not "wiggle" so I assumed it was a swollen lymph node that would eventually go back to normal. It's been almost two weeks now and sometimes when applied light pressure it oozes a gross yellow pus (more like I think what a cyst would have). I'm at college and it would be very expensive to go see a doctor, does anyone know what this is and how to home remedy it?