Upset

So I'm trying to go to bed but I'm thinking about something an older coworker said to me today at work. I'm 38weeks pregnant working in a kitchen cooking and I needed someone to lift a pan to bring to the dishwasher. This lady said "if u can't lift anything now how are u gonna lift ur baby?" Then she said "my whole pregnancy I was a waitress lifting heavy stuff" ..well good for fucking her. This isn't the first time I've heard comments about me not being able to lift or carry somewhat heavy things. She said this in front of everyone too and it's making me go insane. I know I shouldn't care and I'm prob emotional for no reason but it makes me upset I'm still working hard and people are acting like I'm not doing shit