HELP!! Earliest CD where DR agreed to do BT??

[AnyDream]

Hello ladies,

What's the earliest cycle day that your DR agreed to do a Blood Test to confirm a pregnancy for you?

Obviously any time after AF is due - but what about days before AF is due? I'm at CD 24 on an average cycle length of 26 days, ie 12 DPO.

Don't want to look like a nutter when I lob up to the drs with a handful of HPTs all with nearly invisible lines on them....!! HELP!!!