I've been BNC for 2 years now and got my first infection. Just sharing that if you think it's infected don't wait. 3 days after injection it was clear, hard, red, painful. Usually pip is going down on day 3, not at it's worst. Since this is a harm reduction forum I wanted to share this experience. I went to the hospital and was prescribed cefixime (antibiotic pill). I was prescribed 200mg twice a day for a week.