Acne problem

Patient: Hi, I’m a 21 year old female and in the last two years I’ve started suffering from bad acne. My doctor put me on the contraceptive pill femodene as it apparently helps improve acne. But I’ve been on femodene for about two months now and have seen no improvements. I was wondering if maybe it takes longer than two months to see improvements, or perhaps it’s just never going to work if it hasn’t already? Any advice would be much appreciated.Thank you.