So I developed a bite one morening which has swollen in size in the past 4 days. it is now. i have 2.they have a black scab over them and a half inch radius circle of swelling around them.i peeled one off yesterday now and juiced it a bit.under the scab there appeared to be pus??but it was underneath more skin and couldnt be squeezed out so i just covered them and left them alone.