I'm on birth control pills (Microgestin) and I am usually on time every day but for some reason I missed one pill two or three days ago. I took one yesterday, but today I had unprotected sex and he came inside. After sex was when I realized I had previously missed a pill so I immediately took the pill for today and the one I supposedly missed (so I took two pills today). Should I also take Plan B? I'm so nervous since I feel like I've been off by a day from my pills, thank you guys for your help.