Eight positive test doctors test negative

Patient: I have been having pregnancy symptoms for a week and a half. One day before my supposed missed period I took a pregnancy test it came out positive I couldn’t be that so I took 7 more within 5 days all positive. Then I go to the doctor to take their urine test and she comes back a minute later saying its negative I’m so confused right now. On top of that the nurse just sounded annoyed that I didn’t believe her test results. My last period was January 31st. I’m just wondering could she be right or I’m I wrong?