// I don't have a rash, Sqad, but do have something that looks like an infected spot.//
With the caveat that I'm not a doctor and a bit 'gung-ho' I would place a comfortably warm wet cloth on the area for around 10 minutes then give it a squeeze. If anything comes out, then clean thoroughly and apply an antiseptic cream and a bandage covering if you can.
If after a couple of days it's no better, or you get a temperature, call 111.