So have any of you ever felt/known you was pregnant but the tests kept coming back negative?

I’m three days late, I knew early with my first I was pregnant and feel so strongly I am again now. We’ve been trying for six months and this time I feel it! However I’ve done three clear blue tests, one digital that said not pregnant and two normal ones.

One of the normal had the faintest line that would cause a debate of ‘yes there is a faint line’ and ‘nope no line’ - I’ll post a pic.

I guess my question is, has anyone felt how I feel and been pregnant even though the tests say you’re not? This early on as well. So three days late, back ache, slight cramps, sore boobs, slight nausea and a good gut feeling.