Early signs of preeclampsia???

So i have gestational diabetes and today i went to my high risk ob and they prescribed me meds to keep my sugars regulated after breakfast. So now i have to take it once a day. :( but they tested my urine and came back positive for ketones and protein. Is this an early sign of developing preeclampsia? I am 35 weeks, and she wants me to come in twice a week now for non stress tests and i have a growth ultrasound scheduled for oct 5. She said they will definitely induce by 39 weeks, but im concerned about developing preeclampsia bc ive heard protein in the urine is a sign. Has anyone had protein in their urine and not have preeclampsia??