Hi, I'm 27 Year Old My Doctor Advised Me To

Hi, I'm 27 year old my doctor advised me to take femilon 21 days packet for 3 months to treat my cyst, but i took first pack regularly but after 14 days while taking pill I am having little bit vaginal bleeding. I had done last year course of same medicine but not faced same problem.please dr. Suggest what should I do nd reason behind of bleeding while on femilion still left to take 1week medicine ,have a doubt that am i fertilized? because of femilon am i aborted? thats y i'm bleeding. what i need to do now please help me