Phantom pregnancy

Alisha
Has anyone ever had a phantom/fake pregnancy? I'm 12 days late and had soooo many symptoms of pregnancy. I've gained wait, constantly vomiting, sore boobs etc however the first test I took had two faint lines but was never clear. The rest of the tests I took where smudged but negative. I took a clear blue test which turned out negative. Still not come on my period but still having symptoms
The only thing I can think of is a phantom pregnancy but not to sure what they are