My boyfriend had a large swollen lump on the back of his ear for about a week or so. It was so tender, red, & inflamed, and his lymph nodes on his neck were swollen too. The cyst was about 1/2 inch in diameter. Last night we went to the Dr. but only the ER was open, and expensive. Last night, it popped - i wasn t there to see, but he said it oozed green snot-like pus. I took a look this morning and it is still there, just not nearly as large. what should he do? and should we worry?