Am I being whiney?

I need honest opinions, and I may just be whiney or feeling sorry for myself. I have a beautiful 13months old daughter who I adore! shes so smart and says so many words, but not momma or mommy. she will say kitty, doggie, grandad, thanks, nana and her favorite, daddy. she says daddy 24/7 but never mommy, and yes I'm a little jealous and sad by it. she thinks its a game for me to ask her to say mommy and she only says daddy. it's to the point now if I ask her to say mommy she slaps me. it hurts both physically and emotionally. And I'm just a little sad bc we had a miscarriage in Jan and I want another baby but no luck so far. I think I'm just feeling sad and down. maybe I'm being whiney and i just need to get over it. just needing some advice from other moms out there. thank you.