i have been looking on the internet for pregnancy calculator and i put my dates in and it says im 4 weeks pregnant but AF isnt due until friday so if i test now is there a possibility it will be a BFP if i am pregnant?
some of these pg calculators use an average to predict when you 'should' ovulate/menstruate, depending on the info loaded (and what info they ask for) would determine when they think your last period was and, therefore, when your due date will be if you are pg.
good luck with testing, if you get bfp i'm sure the dr will be able to give you a better idea of due date.