I HAD UNPROTECTED SEX ON THE 30 OF JULY. HE CAME INSIDE OF ME AND EVERYTHING. I DIDNT GET MY PERIOD AT ALL THAT MONTH. I BEEN HAVING STOMACH PAINS AND HEADACHES AND MY BACK WAS HURTING A FEW TIMES. I TOOK A PREGNANCY TEST TODAY AND IT CAME UP NEGATIVE. AM I SUPPOSE TO WAIT. WHEN SHOULD I TAKE ANOTHER TEST