Do I have an infection? (photo)

I had a hair transplant three weeks ago and these pimples bother me a great deal and they look horrible as well. What should I do?

This could be mild folliculitis. Go back to your doctor.  He will probably want to lance one of these pimples and see if any pus comes out. In any event, a culture of the lanced pimple may yield a positive finding and if it does, then an appropriate antibiotic will be used to treat it.

These pimples could be mild folliculitis.