If he did not ejaculate inside of u then theres no way you could be pregnant.Only if sperm was released inside.Exercise can postpone your cycle if your very active,even stress can have a big affect on your period.So stop stressing,relax,and if u havent missed a period theres nothing to worry about.[Mom of Two] :) also if you dont want to get pregnant u shouldnt continue to have unprotected sex.Your far to young to have a baby which im sure u knw since your freaking out.Protrct yourself,respect yourself,save yourself for the right person in marraige and have a baby at the right time.I got pregnant with my first child at 18 and it wasnt easy.Im older and married now,having a boy and things are better that way.Not trying to be your parent here,but i woulnt be much of a mom if i didnt encourage u to wait.Im speaking from experience.Too many young single moms and u dont want to be one,u still have alot toenjoy at your age.But your life is yours and u choose what to do with it.If your gonna have sex use protection.Best of luck to u.
I also would say use condoms as that will protect you from sexually transmitted infections and diseases. The pill will only protect you from pregnancy.
I'm guessing he did the withdraw method. That doesn't always work i'm afraid and is not a full proof method to stop you getting pregnant. He could of still pre-cummed inside you which still can get you pregnant. You'd have a high risk of being pregnant if it was during the time you were ovulating which is the most fertile days you have in your cycle. It ranges between two weeks before you period is due. However you still have a chance of getting pregnant at any time because the risk still is there. Sounds like you need to get an appointment with the doctor and get a blood test to determine whether you're pregnant or not as it's more accurate and you're very late with your period. If you're not pregnant,it will need to be determined why else you haven't got your period. If you aren't then definitely start enforcing methods of contraception such as the pill which you can get from the doctor or sexual health clinics. Good luck!