Am I going crazy

Mia

I’m 15 days lay for my period . Takin test that were negative or possible faint line . I took this on the 21st, where I thought I saw faint line

Then I took another the 22 , which I see nothing

Then I took another on the 26th and I figured by now levels should’ve at least doubled

If I’m pregnant I would be 6 weeks , I had an appt today and of course urine test came back negative, so I’m waiting on blood work now :/