I have a typical cycle length of 30 days, this last one was 3 weeks late for unknown reasons..lasted 5 days just ended yesterday. I have 40 test, should I wait a week and start testing twice a day until I'm either pregnant or get my period again? Thanks for any and all advice. I've never done this before... And if you have any stories of doing this and it working the first time around, please share what you did!