MORMING. I ALST HAD MY PERIOD ON THE 27TH OF JULY AND HAD AN UNPROTECTED SEX WITH MY PARTNER ON 6TH OF AUGUST THEN TOOK A MORNING AFTER PILL ON THE 7TH.FROM THERE NOTHING HAPPENED THEN AFER 4 DAYS I AM NOW EPERIENCING STOMACH CRAMPS AND AM NOT EVEN BLEEDING,SO AM SCARED I MIHGT BE PREG.HELP PLEASE!!1