(this likely should be in the general TTC area instead of the buddies part, might get moved)

It SOUNDS like you should expect a BFP from this. Those that don't get a prior positive still have a 10-15% chance for a BFN for a whole week after AF was due even tho they are in deed pregnant. I think many of them just don't have kidneys that filter the hCG very well when the levels are still low. I'm at... 17DPO and still a BFN this morning. Same last time too - didn't have a positive HPT until around 3-4 weeks late!!! Hope the BT shows you that you are UTD!