People Commenting on Size

Te

How do you deal with people commenting on your bump size? I’m 18w5d and am barely showing, especially in the morning. Every time I tell someone how far along I am they look at me like I’m insane and say “oh wow I couldn’t even tell you were pregnant you’re so tiny” and today a lady at the dentist said “has your doctor said anything about how small you are?” So basically I’m gonna lose my shit if one more person says something.