Today is the first day of missed period. I'm going down now to get a twin pack of early digital tests. I'll do one today and one on monday if todays is negative. (pee is in the fridge lol).
I don't mean to be funny, but you'll get a more accurate result if you just pee directly onto a stick, rather than storing it for days in a container which may not be sterile, and thus could have an effect on your results? Seems a very bizarre way of doing things, and I've no doubt you will need to go to the toilet at some other time over the weekend.
Sorry if that seems harsh, but I don't get your logic with storing it in the fridge instead of using fresh urine.