Retinol

About a month ago I broke out with cystic acne. It kept getting progressively worse and I became obsessed with fixing the problem. I finally was able to get it under control with some essential oils (copaiba, lavender, frankincense) but the cysts still lingered. I kept reading how retinol is the best treatment for cystic acne but I know it's not recommended while breastfeeding.

I decided to try my retin-A serum for just a night on the cysts. I woke up to them half the size and not as red! I want to use the retin-A until they are gone for good. Has anyone been told it's ok to use retinol for a short period of time?