6 months post op Accutane, I have oily skin, large pore, and scarring on my face that was not there prior. Is this normal?

I did a 6 month course of accutane and have been off it since April. The reason I went on accutane was excessive oil and some cystic acne. My skin is still very oily and my pores are very large. I also have scarring on my face that was not there prior to being on accutane. The last month that I was on the medication, my skin was clear, oil free, and my pores/scarring were not as visible. Can I go back on accutane to maintain how my skin looked the last month? Can accutane cause scarring?