did you have protected or unprotected sex?

its a long term boyfriend, so unprotected....................

well your hymen could have been broken? thats all i can think of that it might be

and you could be pregnant too now ya know...

It could be from the plan-b... but you realize that just because you took plan-b 5 days ago doesn't make you safe right now? You could still get pregnant.

You either had sex that was too rough, or you are bleeding from plan-b. I'd get on some real birth control.

I agree with Eiri. If you are having unprotected sex all the time you need to get on birth control if you don't want to get pregnant.

As the others said, it could be due to the Plan B. You should become familiar with the side effects of things before you take them.

Also be aware that Plan B is not meant to be used every time you have sex. So if you are having unprotected sex and do not want to get pregnant, you'll have to actually use birth control.