My daughter still can't talk

manel

My daughter is now 20months old ( first child) and still can't identify me as mama or call me that even her dad.. She's babbling all kind of things but not talking some times I wonder if she is understanding me when I try to teach her things... I feel so frustrated especially when my parents or in-laws say "oh you're overreacting, she's gonna talk soon, don't make such a big deal of it"

Have anyone ever experienced this?