I receive plenty of positive pregnancy test 

So I tested  daily to see if my lines are getting stronger and things are looking good exapext today I did not recieve a positive  I though oh what's happening so I went to wilkinson  and bough a clear blue  digital exspecting to see pregnant 2-3 but it came back not pregnant my doctors are jokes my next appointment want till 2nd September so I decided to go to the hospital today I exsplianed my situation and they did a pee test and said its negative 

But I just don't understand it I have had plenty of postive on plenty of test and even on a clear blue I have not received my period and I have not bled in anyway at all so i just don't understand what is happening 

Has anyone ever been through this you say you can never get a faulse positive I though I would of been 4 weeks 4 days pregnant today 

Pics followed below I deleted most of my pics as I though clear blue had sorted the pregnancy situation out