Weight gains and doctor visits...

So I had an appointment this morning... And my doctor told me that I've gained too much weight for only being 21 weeks pregnant and she wanted me to see a nutritionist... I just wanted to start crying right there.. They weigh me in while I'm in uniform every time so there is that extra weight... I track my weight on here and it's only been 19 lbs it's just kind of defeating I really wish she wouldn't of said anything about my weight... What do you guys think?