Is it normal i feel it's easier for me to mimic people emotions?

I've come to a rough area in my life and need some input please?

So I've had multiple people tell me that it "SEEMS" like I get happy, sad, mad etc., but it's only when others are having feeling/emotion. Other than anger loathe or hate. I never have any genuine emotion though.

It disturbs me because I have a son and I watch how and listen how he asks others things. But with me, it's like he's asking me if its right instead of if it is..what it is. He's also always asking me questions pertaining to how I feel like he needs to know cause I don't show it. I tell him I love him and read him his bedtime story, tuck him in. I make him breakfast before school take him to school pick him up watch cartoons with him and take home places on the weekend sooo I'm lost at why people tell me this and why my sons asks me questions the way different from others. Can some please tell me if this is normal or not if so what is going on???!!