Positive then negative. Heartbroken 💔😢

So Im 9 days late and decided to take a test on Friday and it turned out to be a faint positive but it was very clear both lines were there. I was so excited and happy that I couldn't believe it and tested again on Saturday and positive, still faint but positive. This morning I tested again just to make sure and the faint line was now nearly there. I was confused and worried so I decided to get blood test done at my nearest urgent care. I was a mess going in because of the results I had seen this morning. They drew blood and did urine exam and both came back negative. I cried in front of the doc and on my way out and now laying in bed with the curtains closed, in the dark, crying again because I'm devastated. Im confused, heartbroken, upset, crushed. I want to crawl under a rock and never come out. How is this even possible?? How do you get a positive with early response and then get a negative and negative blood work??? Im so sad right now I can't even manage to get up and be with my family. Im so disappointed!