Hi I am taking diane 35 from yesterday and I have to take it for next 21 days .then I will have to repeat the same course of 21 days on the 3rd day of next menstrual cycle. My question is if in between I i involved in any protective sexual activity will I still get pregnant even after taking medicine on regular basis as prescribed. Also if I involved in sexual activity which is protective then when should I start taking medicine on the next cycle (like on 1st day of periods or 3rd day of periods )? Pls help me out. I do not want to get pregnant even if I involved in sexual activity also I will take medicines as prescribed .but m confuse. Pls help me out.