37 week checkup now a nervous wreck

Last week at my 36 week checkup i was measuring 34cm and baby's heart rate has always been around 140-145. I was dilated to a 1 and 0% effaced. Today at my 37 week checkup I'm only measuring 32cm and baby's heart rate was 120 and I have lost weight since appt last week. Dr said everything is normal and fine but now I'm concerned and a nervous wreck. Especially since she had another patient in labor and had to run out of the room in the middle of my checkup and had the nurse finish and I never got to talk to her again. She just keeps saying I'm going to have a small baby and nothing to worry about but now I'm freaking out.