But I'm on birth control and I'm most fertile tomorrow is there anyway I have a chance?

Why are you on birth control if you want to get pregnant.
There is always a slight chance, people do get pregnant on birth control but the odds are against it.

How old are you ?

I'm 16

At 16 you are not ready to be pregnant.

Your body is still developing and would take the necessary nutrients from your baby for you. This could put you and your baby at high risk for pregnancy induced high blood pressure, pregnancy induced diabetes, preeclampsia or eclampsia (seizures), down syndrome, premature baby, low birth weight.

Should I go on?

Also, how are you going to afford this baby should you get pregnant? Do you have a full time job making over $20 an hour?

What about the baby's father. You know he won't stick around right? No, I can promise you that when the carp hits the fan he'll find a girl who has time to go out and party.

I know, you are mature right? Actually, you are not mature enough to raise a child of your own. You may be mature enough to babysit, but not your own child.