Plus size and self conscious.

So I am 7 weeks today and I am definitely plus size. I am really concerned about telling people I work with that I am expecting because I work in a hospital pharmacy and we do discharges and a lot of the people I work at scoff at peoples charts when they see they are overweight and just had a baby or something. I am afraid I'm just gonna be the butt of their jokes when I'm not around. Anyone else feel the same?