7 1/2 months but no momma or dada!

Austin is 7 1/2 months now! Seriously i cant believe it! I remember downloading this app when i was only 4 weeks pregnant and now here we are. He crawls, pulls himself to stand and pulls himself to sit on his own (he’s been doing all of this since 6 months). But he does not say mama or dada! He barely babbles in two syllables and mostly just says “ah” and does a lot of grunting and growling. Am i being worried for nothing? I know all babies do stuff at their own pace but for some reason this is worrying me!