Positive and negative tests!?!

R

I took a test last night (first test) and it came back positive. It was a cheap one so I thought I’d test with a more expensive one in the morning. This morning I took a urine sample used the same sample to test with three more tests. Two of the more expensive tests have come back negative (middle two) and the third has come back positive (bottom). Anyone had this before? Am I pregnant or are the cheap tests giving me false positives? 🤷🏼‍♀️