took a plan b , now my period is 2 weeks early and really light

i've never been sexually active up until recently , so all of this is really new to me

i took a plan b as precaution bc even tho my bf did pull out , i wanted to be sure since i'm not on any other type of birth control

about 4 days later , i got that cramping and some really light spotting , then the next day i had my usual amount of cramping but still very light bleeding

is this normal ?? will i still get my period in 2 weeks which was the normal expected date ?? i'm freaking out bc pregnancy is like my worst fear and some google posts say this could be a sign of pregnancy

my period is fairly normal , every 3.5 - 4 weeks , this is the first time it's been early and very light since i was about 13 , so 10 years ago

please help , im scared