For the past one week or so, there have been 3 painful puss-infused insect bites (i think) or something like blisters and I've tried everything to make them better like cold ice packs, lacto calamine lotion and anti bacterial powder but they sometimes reduce and then go back to the original size again and the area around these bites are all red now. I'm scared. They are painful and sting when in touch with fabric. What to do??