17 months & still not talking 😭

Laura • Ethan Ashley born 20th September 2015 at 12.08am weighing 8lb 👶🏼
I'm getting worried that my little boy won't talk he just says mom and dad but it isn't always clear, he just puts when he wants something. I don't know what to do I've tried to cut down on his time having his dodo (dummy/pacifier) anything else you would encourage I've tried small words like hi and bye but nothing's working. 
I was 14 months when I started speaking and I was pretty good but not good at walking his the opposite way round 😭😭