 [ Symptoms ] do i have a virus or the flu  hello  i started feeling fatigued and achy yesterday i had chills the back of my head hurt and full body aches temperature of 100 6 my eyes just burn when i close them i have no energy today i tried to drink as much as possible [ Disease ] yes based on your high level of anxiety she should consider plan b but that would be her choice while the chance of an unintentional pregnancy is small it is not zero viable sperm can still be present in that pre ejaculate seminal fluid and it only takes one a woman is not typically ovulating right after her period ends it is usually mid cycle but this not a 100 certainty either use condoms next time avoid the worry or just avoid the sex