Heartbroken 💔

I did these tests,one yesterday and one today, nor long got back from the nurse and theirs are negative, my urine was clear and when I did my before it was dark yellow. I have drank quite a bit. But their adimant it negative and cystitis. Heartbroken and fed up with this false hope, I give up with it all. My mental health is crap since I lost the last 2 and I am dealing with this. But don't get why mine were positive and their one was negative. What do I do. Top one was yesterdays bottom today.(came up within 3 minutes)