Is my 22 month old behind?

I am sorry you are so frustrated. I can tell you that around that age, my son had around 30 words and by 24 months, he had 75. I was worried he was behind back then, too. Try not to worry, all children develop at different rates. This is VERY true! Try not to compare him to other kids also, although I know it's easy to do. Anyway, keep working with him for the next 2 months until his 2 year check up. Read to him daily (picture books especially are helpful), etc. Does he point? This is also a good indicator that he is on track. If he is not pointing, you may want to mention that to your doctor. I believe that by 24 months, toddlers should have around 50 words on average. If he doesn't, you can always mention your concerns to your peditrician. Take care, hun!