Being pregnant and overweight

My first OB appointment is tomorrow at 9 and 1/2 weeks.  With my first pregnancy I was about 65 pounds lighter than I am now.  I had a healthy baby girl.  My second pregnancy I miscarried at 7 weeks and was the same weight I am now.  I found out I was pregnant Thanksgiving week. I immediately became concerned with my weight again (5'1, 211 pounds).  I have lost 11 pounds as of today and currently weigh 200 pounds.  I am so concerned that I will go to the doctor's tomorrow and get a lecture about my weight.  Anyone else been in this situation that can offer some advice.  I know I need to lose weight and get healthy while I am pregnant, but the last thing I need is an OB who will condemn me when I'm already trying so hard for this baby.  Someone please tell me what to expect.  Thanks!