Iam scared I might be pregnant

Ok so me n my boyfriend had make up sex am not suppose to get my period until the 8 because that's the last time I got it but now iam afraid because the calendar says that I should of gotten on the 30th I don't know what to do if I should wait or get a pregnancy test???I did take the plan b test but iam still worried .. Because two days later we did it but with the pull out ....