DD won't call me Mama/Mummy!

[tomatapassata]

At 6 months old, "mama" was the first word to come put of DD's mouth. Now, at 18 months, she refers to Daddy as "dada" has names for Nanny, Uncles and Aunts, friends, the cat, but nothing for me. She doesn't refer to me as anything, even if she can say "mama."
I'm beginning to feel a bit, well disappointed that I don't have a name I guess and find it all so strange! I worry that she doesn't like me!
I'm eager to hear from any psychology, health care, health visitor type professionals as to why this is as I'm beginning to get a little worried?!

My ds called his dummy mama and i had no name. I knew my place!

I think sometimes IMO babies/very young children see the primary carer as a part of them.

My DC were like this. It did pass.....and a short while later all I ever heard was mummy, mummy, mummy, MAMA!