Anxious: Urine test "border line"

Natalie
Hi all, im 10 weeks and I went to see my midwife Tuesday, she took some bloods and urine off me. My doctors have rang me and said that my bloods are fine but my urine is "border line" they wouldn't tell me anymore and said I would have to give them another urine sample in 2 weeks time, they also said they would get the doctor to ring me Monday to talk about it. Being anxious I rang them back and asked if the doctor could speak to me today or tomorrow regarding my results, however Monday is the earliest appointment. They have told me not to worry and it's nothing seriously as the doctor would of rang me themselves or would of asked me to come in.  I'm also waiting for w letter for my first scan date.
I was just wondering if anybody else has had this and what it could maybe be? It's driving me made having to wait til Monday to speak to a doctor! It's probs nothing but cant help but worry a little! Thanks