Is my doctor ridiculous

I'm 27 weeks I'll be 28 Friday I recently on the 13th had a doctor appointment and gained 6 pounds. But literally thats all I gained since we found out I was pregnant and she's telling me to watch my weight and that I'm getting fat.

It definitely irritated me when that's all I gained and I been pretty good at watching what I eat but the second I gain a pound she's all on me. I get she doesn't want me to deliver a big baby (36 weeks she wants him out) but honestly I want him healthy I don't care if I need a c-section or any of that.