My friend had strep throat this past weekend. We already had a trip planned so we decided to go despite him being sick. He hadnt been to the doctor or been on any medication but his son had just gotten over strep so we are almost positive thats what it was and he got medicine a couple days later. Anyways, on Sunday I assume that I got some kind of bug bit on my thumb and it is very sensitive. It has now become a raised spot almost looking like a pimple with pus. It is gradually getting more redness to the area and my entire thumb is painful to the touch and to any kind of movement. I am curious if you can develop a staph infection from close contact to someone with strep, considering I was nursing to him all weekend.