Glucose in urine

LJ
Hey..
I'm 22+4 weeks pregnant and been to see my midwife today, she tested my urine and said there is glucose in my urine. I was due to have a glucose tolerance test at around 28 weeks anyway as my grandad is diabetic but she is bringing it forward to 24 weeks. I consider myself a healthy weight at 59.5kg. What does this mean? Does this mean I am likely to have gestational diabetes? Any info and stories would be greatly appreciated 😊