I have been on the same birth control for over 2 years now (aviane or orysthia). Have never missed a dose or been late. I started my newest pack on Sunday, March 24. My husband and I had intercourse two days later on Tuesday night (March 26) around 11 p.m. I somehow forgot to take a pill two days later on Friday March 29 (I take around 7 a.m. each day) When I realized Saturday morning that I had missed I took 2 immediately. How concerned should I be that sex from Tuesday will result in a pregnancy? I'm scared that I could have ovulated from that one missed pill (it would have been the sixth pill of the pack) and that sperm can live for 3-5 days which would make them still alive Saturday or Sunday) I've been in contact with my ob/gyn and he said what I did was correct and to use another form of bc for the next 2 weeks. I will be starting my placebo pills in 3 days and my period usually falls on the third placebo pill. I have been very worried and nervous about this and have been having cramps and kind of an upset stomach at times (I'm pretty sure it is nerves) I'm hoping that the stress won't prolong the period when it is suppose to come. What are your thoughts on my chances of getting pregnant. I already have 2 children and am not quite ready for a third. Any info or advice would be great. also when is the best time for a person to take plan b? is it when you've had sex and then realize a pill was missed or if you have sex and then miss a pill a few days later.