So me and my boyfriend had sex the day before my period. He didn't cum or doesn't even think he precummed.... I know I was on 3% of a chance of being pregnant.... But I took the plan b just in case... With all of this is it still possible of being pregnant... I got a brown discharge the day after the sex then took the plan b and now I'm not on my period at all. It's been 4 days since the brown discharge and my period is supposed to start in the next few days? Do I have a reason to worry?