Clear blue digital unreliable?

Yesterday I got 4 faint positives from 2 brands (Tesco’s own and clear blue) with 4 different urine samples (I pee into a container as opposed to on the test directly) I then did a clear blue digital with my first wee this morning only for it to show as not pregnant... AF IS 11 days late, sore breasts, nauseous but also having slight cramping

Anyone been through something similar? I just want to know if I am or not :(

EDIT

First response taken directly from urine stream 10 mins ago..... I’m starting to think this is real!!

UPDATE

for anyone going through a similar situation- clear blue digital is definitely delayed like everyone says!