Redness while on Accutane?

I just got on Accutane 4 days ago, I am 18, 178 pounds and 5'11ft tall. I was prescribed 80mg a day of Myorisan. For the first 3 days, I was out of the sun for like 10 mins wearing only Cerave moisturizer without any SPF. Can this be the cause of the redness, is it a light sunburned on my face? I heard it is also a common side effect of Accutane to have redness on the face. My face is also kind of warm, please help me.

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