Do You Test Before Your Period Is Due
For all the times I have used a HPT (which isn't many thankfully) Yes I have tested prior to AF arriving (during TTC times anyway). I have tested twice after AF is due, thinking we may have had an accident 10yrs ago, but both those times were of course a BFN

Do you Test Before the HPT says you should
Nope I don't think I did. I always got the ones that say they can pick up HCG three days prior to AF's arrival so I stick to that

Are you a serial tester
No not really. During TTC if I got a BFN I would chuck it in the bin and wait for AF to arrive. I woudn't test again the next day or whatever.

Love