Wow, lots of mom's gave great advice. I don't want to repeat, but to let you know that Early Intervention is a good way to go. I believe when scrolling I saw a number in your area for such a thing. Here in Michigan it's called Early On. Two of my kids went through the program, so currently I have 6 years experience with it. I was taught how to bridge sign language with speech. On my own, being Hispanic, I used Spanish and English, sometimes it was easier for them to say it one way over another and at least I could understand what they wanted. Evaluations are always good because sometimes other things can be going on in cognitive development that we just don't see as parents. My son was neurologically delayed and it took him a long time to learn just a few words, plus other issues were going on. Needless to say after helping him in as many ways as I could, and had been taught he's been soaring ever since.
My daughter was different. No reason for the delay, she just was, and she did go through both physical and speech therapy like my son. She also went on to their Pre-Primary Program or classroom for children as early as 3, since Early On ends at three. I'm not sure what's offered in your area, but if there is big concern sometimes it helps to have them in a class like some others moms said they did too. It not only helps with speech, but also helps with their socialization. My daughter soared in the class. She is now in 1st grade and doing just awesome in school. I'm not sure how it would have been had I not had the intervention just to keep an eye on her. Plus if there is a serious problem they know how to go about making sure your child receives services in the school they attend, whether pre-school or grade school. It never hurts to call. One thing I always learned, trust your instincts, even if others say your over reacting. It's always better to be safe than sorry later. An evaluation never hurt anyone. :)
Hope it works well for ya, good luck.