Multiple pos+ tests but neg- blood test?!?

I'm absolutely at a loss for words tonight as I write this. I'm trying to comprehend how I have had 6 different positive tests, from 4 different boxes and 2 different brands but my blood test was negative. My period was not 1, not 2 but almost 3 weeks late. The symptoms were fast and all these tests showed up positive.

The doctor said, and I quote, "false positive tests happen all of the time, they're quite similar to the covid test in that sense". My jaw is still on his floor. I can remember being 12 in health class the day we learned a false positive was RARE. Again in high school health and again in Parenting class in college. My husband came home and Googled and is now even more furious at this doctor because he has learned what I already knew to be true, and because this doctor just accused me of having my period.

So my question is, what just happened? Positive urine tests but not blood? Is that even a thing? Did this Dr. even run my blood? He never brought in my labs to show me, though I believe he offered. I'm on the low-income, free healthcare and we both couldn't help but to feel like we were being pushed out because of that.

I was a mess, I should have spoken up more. My husband, my angel, was at a loss for words as well. Thank you for even taking the time to read this x