I have been on ortho try-cyclen lo for about 9 or ten months now. I am in a commited relationship and my boyfriend has been tested for every std and is clean and so am i. I take my pills everynight at the same time. The latest I have been is about 20 minutes.And thats at the very latest.My boyfriend uses a condom everytime that we have sex. And he pulls out before he comes, even with the condom on. He has never come in me, even with a condom. We never have sex without a condom and he pulls out even with the condom on. I believe that we are being as safe as possible, I know that no method is 100% effective but we both feel that we are being as safe. However, I still worry myself over being pregnant. I normally start my period on the wednesday afternoon during the week of my placebo pills. Last month it wasnt till thursday morning.Does stress have that much of an impact on when you start?What are the chances of becoming pregnant if I use the pills consitenley and condoms and pulling out