Is Ok to Take Accutane Just for One Month?

Hello Doctors, my doctor gave me Roaccutan 20 mg. He explained me about the risk of pregnancy but didnt explain me much. Then i researched on internet and i got scare, cause i already payed for 12 sessions of laser hair removal and the summer is coming with sun and parties. I was wondering if is ok to take just this one box after i finished with my depilation and not take more, or if ill have terrible breakout?my face is not that bad, is just constantly with acne. Best regards, maria