Well some of us cope with waiting some of us don't...I tested 6days before my AF, one part of me was telling me to test ( but thought it won't show anything anyway) but other part said go for it...As i kept having different sort of random symptoms i bought asda test. And I got BFP straight away. It just depends what is hormone level in your body at that time. If you ever tried to test yourself before AF and got bfn I would wait till AF comes...
Anyway good luck with waiting, try occupy your mind, keep yourself busy and try not to think about the time.
baby dust to you!!!