Doctor's Appointment today

I had an appointment today. I did the sugar test where you drink the stuff. It turned out good! My thyroid stayed the same. Last time the doctor told me it would only get worse because it doesn't get better on it's own but I wonder about it staying the same. My T4 level was 0.85 and is only a little low. Does anyone know about this? If it is only a little low how does that affect you? Should I take the medication? I was going to take the medication if it didn't get better so now what? I am leaning towards taking it. Did my change in diet help it get better and would keeping on the diet improve it or keep it the same? I wish there were clear cut answers. I am 4 pounds less than last time! I was quite pleased with that and attribute it to eating better and getting more exercise. BUT, I measured 37 weeks along and I am only 29 weeks. That is not good! He wasn't too concerned because the baby might be sideways and I have a lot of amniotic fluid in there. He thought most airlines don't let you fly by 36 weeks which could cause a problem but we'll have to wait and see when she goes into labor. If we were adopting internationally we wouldn't get the baby within days of birth so this is just a part of it, I guess. I was wrong the other day when I said 10 weeks. This Monday she'll be 8 weeks away and I will be 10 weeks. I'm due Sept. 1-3 and hers is August 18th.