Help! 😩😩

I am 26 weeks as of yesterday, I had gone for my usual prenatal check up. I had gone to the washroom before heading over, when I got there they had asked me for a urine sample. I tried to pee as much as I could, anyway. my doctor had asked if it burned when I peed at all, told her no because it doesn’t. she tells me that they tested blood in my urine and said they can’t send it to the lab because there wasn’t enough urine. I’ve been kind of freaking out since. Is that normal or has that happened to anyone?

this is my first pregnancy as well, she had checked the heartbeat, everything was fine, baby was kicking, my blood pressure is fine, everything is good. I’m just overthinking a lot and don’t know whether I should be concerned or not.