WTF - 3 days late! Clear blue digital pregnancy test sucks!

So today I am 3 days late, and I am religiously regular from 29-30 day cycles.
I took a Clear blue digital test on Wednesday and got a not pregnant, and then took one 5 mins ago, and got a not pregnant as well.
I did a little review hunting on these clear blue digital pregnancy tests and a lot of people have had negative things to say about them. They got negatives each time they used them, but they indeed were pregnant. This is the first time I used it after a recommendation from one of my girlfriends... 
I'm so confused as to what is going on down there... I have all the signs of being pregnant,  like I did last time before I had an ectopic pregnancy, I would just like it to be that the digital test is wrong, and I should go get a different brand... 

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