Clear blue tests positive, all other tests negative?

Hello Ladies,

So my period was 5days Late and I took a pregnancy test, spefically a clearblue digital and I said ‘pregnant 1-2 weeks’. I was totally shocked (unplanned if its not already obvious eek) so I’ve got lots of tests to double check and well;

all the clear blues are positive, 

the sainsburies has a faint line but the Asda and cheap brand are all totally negative. 

What do you all think?

I feel like I know it means I’m pregnant, I’m just in total shock and a little confused by mixed results and what they might mean? 

thanks ladies x