My boyfriend and I had sex at around 6 in the morning on July 24. He may or may not have *** in me, but just to be safe we got the plan b pill around 5 that afternoon . About 1-2 days later i had bleeding that started as brownish discharge and then went into a full blown period , cramping and everything . My period have never been normal , but ive never missed. Now that its August 22 I still have no period . I have gotten slight cramping and the headache , but still no menstrual . I also took two home pregnancy tests which both came out negative. Ive been slightly moody lately , which could be due to stress about this. I have also been constipated. My appetite has decreased . Is it possible for the plan b pill to delay my period for up to a month ? Is my cycle resetting itself ? I used the two step pill if that makes a difference . Then today we had sex, with a condom and when he took it out there was blood all over it , enough to fill one tampon .  About three hours later it stopped. Could i be pregnant ?