I had unprotected sex twice within a few days. The second time things got sketchy so I took a plan b, afterwards I got a light period. I'm a few days late on my period for this month. Should I be worried? I might have taken it too late to protect me the first time. Am I okay because I did get a period afterwards, even though it was light? I am under some stress for personal reasons, how likely is it that I'm late because of that?