Is this rude to say?

Today is the third time someone tells me I look very big for just the amount of weeks I’m pregnant. Followed by an: or is this rude to say?

Uuhm yes, not only rude but also unnecessary. Like what am I supposed to say to that? ‘Thank you for telling me. I didn’t feel gigantic already, I will try to loose some weight if it’s so important to you’

I am bigger. This is my second pregnancy so everything popped a lot sooner. I also have cravings all day. Not that I need to explain it to anybody, I am not going to worry about my weight during pregnancy. I will deal with that after my baby is safely delivered.

After three times I still don’t know how to respond to comments like that.