uti symptoms but no uti/venting

I more just need to vent.

When I'm highly stressed and anxious I have the urge to pee a lot. I've had this happen in the past and then I scare myself thinking I have a UTI. In the past I've gone to a walk In clinic and every time they say I have traces of blood in my urine and give me antibiotics. However once the urine is sent to the lab it says I have no infection.

I've been under extreme stress the past month and for about a week and a half now I've had the urge to pee a lot but some days I feel totally fine. Today I have no need to pee a lot. Yestersay and today I woke up with my lower back feeling like it had an burning sensation. It made me wonder if I just slept on it wrong but it still freaked me out.

Not really looking for advice, I'm just venting. I've been drinking a lot of water and trying to reduce my stress. I'll keep an eye on it and see if it gets worse but for now I don't want to be put on antibiotics for no reason. I wonder if it's just my extreme anxiety causing these symptoms in my body.