Talking - should I be concerned/any of you have a slow starter? HELP/ADVICE

[doodledandy]

My DS2 is 15 months old and hardly tries to say anything. He has said mama a few times if I say it to him but doesn't use it to get my attention - he just shouts or tries to come and get me. He also cannot 'pass me the ball' or whatever - he doesn't take any notice and is quite self sufficient at times and always on the go, completely unlike my first son was. My first son was a real mummies boy, constant attention craving and talking by now - or certainly using lots of nouns and names. They are so different that I am getting a bit worried - should I be?

Thanks to all for all of your advice. Desperatehousewife (great name) he likes the tower game and the ball rolling so we are doing ok I think.

I wouldn't be worried at this age. Both my mindees had few words (about 6) at 18mths but both were able to use short sentences by 2.5 yrs. They sometimes have the words but lack confidence to say them. Some children go from no words to talking in sentences in a few months iyswim.