If you have vaginal sex ... meaning if a man's penis enters your vagina (or your dick goes into a vagina)....

YOU ARE AT RISK FOR BECOMING PREGNANT. (*Please re-read that sentence again*)

YES, you could become pregnant even WITH the following :

1. You're on birth control , ANY of the birth controls

2. The man put a condom on his penis before entering your vagina

3. You took plan b within 72 hours - after before or hell, during

4. The man pulled his penis out before he cam

5. The man put his penis in your vagina but didnt cum

6. You're on your period (though, pretty sure it's more impossible & uncommon but if you ovulated somehow 2-4 days later and still had sperm in you, maybe)

Bottom line

IF A PENIS ENTERS INTO A VAGINA , YOU ARE AT RISK OF BECOMING PREGNANT.

Also, please, PLEASE do NOT have sex if you're not educated in the basics... such as the above... its incredibly irresponsible.

You're never 100% protected from becoming pregnant if you're having vaginal intercourse (with a penis)

**UPDATE**

Also just want to recommend Planned Parent is a great resource to get education, birth control , exams ... but also you can Google just about anything sex related as well. Please, get educated , it's so important.