12 big red bites on my upper legs, back they itch and swollen. Looks like a yellow pimple inside Could it be mosquito bite, I had staph infection 2011?

Several red bites . with a small pimple(pustule)in the center describes a fire ant bite.Any possible exposure?Soy sause takes away the sting(also works for bee/wasp stings).Must also consider cellulitis.If gets worse,c ur doc.