Ha! I had to laugh when I read your post because my babies never talked very early either, while all my friends had children that did! In fact, our youngest one (22 months also, talking about as much as yours) talks way more than any of our other 6 children did. BUT - I'm telling you - don't let it worry you! My oldest daughter has an IQ of 153, so it has nothing to do with their intelligence. My oldest son was fixing vacuum cleaners at age 7. One of my other daughters sped through kindergarten and first grade in just nine months (we homeschool). I've heard it said that Einstein didn't talk early either! So don't let anyone tell you it reflects their learning abilities or intelligence. (Of course, there are medical conditions which would be exceptions to that statement. But as a rule, if your child is perfectly healthy and without other medical conditions, not speaking early is not a problem.)
My brother was exceptionally smart (designing working blueprints used by contractors, building projects, etc., when he only 16), and he did not talk AT ALL until age 4. My mom was concerned he had a disability until one day he walked in the kitchen and said, "Momma, can I have a cookie?" Of course, she almost passed out, because he hadn't said a word until that point.
Also, being bi-lingual is GREAT at this age. Many scholars say the best time to teach a child a second or even a third language is BEFORE the age of 5! Their little brains are just like sponges, soaking up information at a tremendous rate of speed. You wait - by the time your child is 4, he'll be rattling off in both languages.