okay so my last period was on june 10th.. and i ovulated between the 18th and the 23rd. i have been on birth control for close to 4 years now. i missed a pill on the tuesday of my first week, but took it as soon as i remembered the next day with the pill for that day also. my boyfriend and i had unprotected sex on the 19th, and i used my birth control as an emergency contraceptive. we did so again the next night. i'm worried that i may have gotten pregnant due to the missed pill the week before? i don't know if i'm being paranoid or not and i'd really appreciate some help?