Babys First Word

When did everyone's baby say their first word mama/dada etc.? My little girl is 4 months and I swear a lot of the time it sounds like she's trying to say mama so just curious when they actually say their first word lol I kinda feel like this is too young and it's just noises she's learning to make its still awesome and super cute either way just wondering when I should expect an actual mama or dada!