After 2 negative blood test done why is this still showing 😥

3 minuets

5 minutes after

For the past week I have been testing with first response and I have been getting vvvfl I got blood work done 4 days apart and they are coming back negative... I’m so lost!!! I had someone els to test and hers came back negative no line no indent nothing. I tested today not first morning urine and this is what I got. My gynecologist is running more test but what can be triggering this test to have a faint line???

FYI I have kids and as soon as my test had a line I was pregnant but now I’m just so confuse