Help!

Chloe

Right I took a clear blue 2 days ago and got a faint positive

I then took a first response yesterday and yet again got another faint positive

I then took one this morning and got another faint positive

I’ve now just took 2 cheap strip tests and got negatives!! I’m so confused shouldn’t the line be getting darker? I’m 2 days late for my period I’m going crazy !!