Sometimes people are inconsiderate or absent minded when it comes to thinking of how others would feel. My SO would do the same thing while I was pregnant and I didn’t understand until I realized he was just being overly protective. I just had to tell him what I could handle and what I needed to avoid.

Don’t let their inner prejudgments affect you. It has no reflection of how fun you are but how much they don’t understand about the situation.

I’m sure you’re plenty fun babe. ♥️and don’t be afraid to give off the responsibility to watch your nephew to someone else, it’s not your kid and you are under absolutely no obligation just because your pregnant.
It’s not mean, it’s just not letting others bulldoze you for their own convenience.