answersLogoWhite

0

It could...the only way to tell is to take an hpt, or better yet, go to your doctor and tell them what happened...they'll be able to test or give you provera to induce your period if you're not pregnant. Plan b isn't 100% effective, so if you've been regular up and to this point, I would go get checked out...good luck!

User Avatar

Wiki User

16y ago

What else can I help you with?