My daughter (8 years old) had what seemed to be a mosquito bite on the side of her leg. Before we knew it, the bite had turned black and large. I just decided to lance it tonight. Massive amounts of white stuff and dark blood came out of it. It took me about 15 minutes to get it all out. I ve never seen anything like that. My son also has a large bite on upper left side. We took him to the doc and she gave him an antibiotic but it hasn t gotten smaller. Im worries it s the same thing. Any thoughts on what this could be?