Around two days ago I started using a pea sized amount of Tretinoin 0.1% after cleansing. Since then my "normal" acne (whiteheads, red but unpainful pustules, blackheads) has become painful, blaring red cystic acne. My face looks worse than it ever has. When I went in to my doctors office to discuss treatment he never noted that this would be one of the side affects of the medication, so I'm a little concerned.
Should I discontinue use? Or is this normal and should I carry on?