Im 18 i had sex a week and 2 days ago and still no pregnancy symptoms?

Birth control ?: You may be lucky and have avoided pregnancy, but if you are late on your period by a week, make sure you check a urine pregnancy test, the consider birth control if you are trying NOT to get pregnant. Be careful !

There is no: guarantee that you are pregnant. Classic pregnancy symptoms normally would start after the period is missed (and often much later). Take a home pregnancy test if you miss your period. Take care.