Negative Blood Test - Positive Pregnancy Test ??

After 3 positives I went to get my blood test to confirm pregnancy. They told me it was negative. But as soon as I got home I took another test and it came out positive… I did ask for an ultrasound just waiting for a response.

Has anyone had this happen before ? I’m so confused. I normally would say it’s a false positive but it’s been 4 tests from different stores. 🤔

(I can’t post the video of the test, here’s a photo… it was way positive before the urine traveled all the way though)