emergency contraception
"Ladies please note- bone of the ways plan b works is to PREVENT ovulation, so in simple terms, if you have already ovulated- it can be useless! That isn't something that was disclosed to me, & most people have no idea! It's a catch 22 because you can usually only get pregnant when you ovulate ..anyways.. I had sex once, I took it 12 hrs after unprotected sex. Ended up getting PREGNANT. I must have already ovulated.Then I later had a miscarriage(chemical pregnancy) b/c the way my doctor explained it, plan b does three things: 
1. Prevent ovulation
2. Thicken cervical fluid (stops spermies)
3. Thins lining of uterus to prevent egg implanting
I had a miscarriage b/c the egg was never able to implant. I feel horribly about it today & wanted to share, hope this helps"