You can not be pregnant if you have your period at all. However, if you have missed a week of your birth control pills you do have the chance of becoming pregnant if you have unprotected sex.
Just before your period you are at your most fertile
yes
Yes! With octuplets!
"If you have unprotected sex 11 days before you were due your period could you get pregnant" Yes. because the womb has not bled out yet, and it still open. I don't think you can get pregnant and get your period at the same time, If that happened, the baby died. and you need to see a doctor. Are you under-age? The way to tell if your pregnant, Is if you missed your period, Irregularity does not mean you are having a child.
No
yes you can
Anytime you have sex, period or no, you can get pregnant.
Yes
YES. Even if you're actually on your period, you can get pregnant.
no...
"Likely", no. But it has happened.