How long did it take before you got that BFP?

Some woman don't carry enough of the pregnancy hormone and there for can't get a positive for up to three months , As it sounds to me you should go to the Dr. have them draw your blood it cost around $45 and you will know in a few days, I think you could be or your period is really late. And yes I know people who have had their period while pregnant and didn't know till they where puking and having pregnancy symptoms, anything is possible good luck