Hi Lisa
I took Isabella to the doctor this morning thanks to gunky eyes and she took a swab (to make sure it wasn't anything more sinister than conjunctivitis) and prescribed some drops, which I have to put in every six hours.
I heard about breastmillk being a good treatment ages ago, so I doubt very much you're causing him any harm. I was also told to go back if they hadn't cleared up in a week. HTH.