What are the odds of accutane not working for me? I'm still struggling with acne (on my 6th month of accutane)

I am 19 years old and have been struggling with mild acne ever since I got on birth control (be yaz). Last year it got so bad my self esteem dropped dramatically and didn't know what to do. I have tried EVERYTHING. I just started my 6th month on accutane and I'm still struggling with acne. It cleared up a lot for a while and now I'm breaking out all the time. Right now, I have 2 really big under the skin pimples that won't come to a head and they're very painful. I'm scared accutane won't work for me.

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