Discussions

So last saturday I had a small itchy bump on my back that I thought was a nomal bug but. As the night went on it got bigger and more painful. In the next couple days it grew to be about 6 inches across and it was raised about a quarter inch. It also had turned black in the middle. black spot grew to be about an in diameter. Now a week has gone by and I have a big hole that the doctors had to pack and let drain. Any ideas of any spiders or anything that could have done this?? I'd post pictures, but it is pretty gross and I don't want anyone to puke...not kidding.