Too much pregnancy weight gain?

I am 39 weeks 3 days pregnant, I went to my doctor appointment today, and after asking about my total weight gain and getting an answer of 40 lbs, she literally told me to stop eating! Before my pregnancy I struggled with a mix of anorexia and bulimia and have still had some bulimia during pregnancy. I am just shocked that a medical doctor would literally say stop eating, even if she was joking, I can't stop thinking about it and feel like after I have the baby I will just do what she said and stop eating