EVERY TIME YOU HAVE UNPROTECTED SEX THERE'S ALWAYS A CHANCE OF GETTING PREGNANT OR AN STD. THERE'S SPERM IN HIS PRE-EJACULATE SO THERE IS A CHANCE THAT YOU CAN GET PREGNANT EVEN IF YOU DID USE A CONDOM TO FINISH. AS FOR THE MORNING AFTER PILL ITS BEST IF YOU TAKE IT WITHIN THE 72 HOURS AFTER YOU HAD UNPROTECTED SEX, THE LONGER YOU WAIT THE LESS EFFECTIVE IT WILL BE, SO THE SOONER THE BETTER. YOU CAN EITHER GO TO THE CLINIC AND GET IT FOR FREE, OR YOU CAN GO TO A PHARMACY LIKE RITE AID AND BUY IT THERE. IT'S PRETTY EXPENSIVE IF YOU BUY IT... I SAW IT FOR $99 AT CVS THE OTHER DAY, AND YOU ALSO HAVE TO BE AT LEAST 18YEARS OLD. IT COMES WITH TWO SMALL PILLS. YOU TAKE ONE, THEN YOU TAKE THE OTHER 12 HOURS AFTER YOU TOOK THE FIRST ONE. HOPE THIS HELPED.
P.S. YOU SHOULD TRY GETTING YOURSELF ON BIRTH CONTROL, THEN YOU WON'T STRESS YOURSELF OUT WITH THESE THINGS.