I don't normally get cramps before AF. Like I will have a really sharp twinge and know that AF *just* hit and then I'll cramp all that day, but never before AF. I've been cramping/stretching for the last handful of days. Don't count yourself out yet!
... do you have a plan for when you will test? Cause otherwise you'll wind up in a cycle of not peeing for several hours, then 'caving' and going peeing and thinking about how if you want to test you'll have to 'start all over.'
Do it tomorrowwwwww!