Lipoma on Head, No Insurance. What Should I Do?

i got hit with a metal pipe a few years back well the knot never went away a year ago the knot smelled foul so i got someone to look at it and they said it looked like a pimple so i popped it and white stuff came out and it looked like it had been there for awhile. this past two weeks it had gotten really big and very sore so i went to the emergency room and the doctor said it was a lipoma.. well today i was looking at it and infection just busted outta of it.. i have no insurance what do i do?

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