I have small red bumps on my stomach, spreading across my side to my back; except for the first one I noticed, they are very small, red, look like they are filled with pus (or have a tiny head) but don t itch. The original one, which I ve had for a week, is about the size of a mosquito bite and itches; looks irritated. It has also spread, about 4 tiny bumps, to my left arm bw wrist and elbow, in the middle of arm. Can you help