My girlfriend is 17 years old and has periodical problem since a year till her last period. Last week we had unprotected sex and that was our first time in life. Will she be pregnant?

She is or she isn't.
Plenty of women get pregnant the first time they have sex. Others take longer. I think most fall in the 3 to 8 month range, but what good is it to be outside the range of most? Pregnant is pregnant, 100%.
Buy some home pregnancy tests (HPT) a week after her next period is due and doesn't come, or is very light.

How is this an emergency?

How is this an emergency?

Because he had sex with her and now he is in a panic that he ruined his life for 2 minutes of fun.

Because he had sex with her and now he is in a panic that he ruined his life for 2 minutes of fun.

When Prior Planning Prevents Piss Poor Performance I don't think of it as an emergency.

Note though - my kids were so sick of me saying the 6 Ps.

You may not think it's an emergency... I may not think it's an emergency... but I'm sure sboy thinks it's an emergency. :)

HAHA exactly!

Maybe next time he will remember this and use Mr. Condom.

Hello Sboy,

I'm sorry to hear about your incident. What made you decent to not use contraception in this instance? Also if the penis was removed before full ejaculation the chances of a zygote being formed drop but are still evident. Like the others said buy a test and use it at the appropriate time. Also in the chances that she may be pregnant sit down with her and have a talk about your future plans and choices. Goodluck and keep us updated.

-fdsaqwerish

Any time there is penile insertion there is the risk of pregnancy. Even if one or more methods of birth control are used.

Clearly you are not ready to have a child and that should have been uppermost in your mind BEFORE you penetrated her.

Now you have to wait until about 2 weeks after she misses her period to take a test.