"for sure" there is no pregnancy. And Plan b may delay your period several months especially if you are irregular to begin with. I, personally, am not a big fan of Plan b but thats just my opinion because too many women dont know how to use it correctly and I think preventing pregnancy BEFORE a sexual encounter is much safer and effective. Please make yourself an appt with a gynecologist or a family planning clinic asap! Find out what birth control options are out there and which one is right for you! Yep, poor girl, she had a rough time! She had a big baby boy too and was almost a virgin for all intents and purposes. I'm very much in favor of preventing pregnancy before sexual encounters. We have so many more options available to us now days and women should take advantage of the things our mothers and grandmothers would have loved having in their day. Preventing pregnancy in the first place is a lot smarter than trying to prevent it after. At least women do have emergency contraception available but I wish more of them were smarter about using it and reading the directions. That passion of the moment can be pretty strong sometimes! One brief moment can change your life forever! And this will sound sexist I am sure, but if a girl doesn't want to become pregnant, she needs to think about birth control, men rarely do and boys, as in teen agers, never