A.H.
I wouldn't worry about it at all. My boys should win awards for being the slowest at all those kinds of things (talking, crawling, walking, etc.). My 2 yr old didn't start walking till 17 months and didn't really start talking in a language we could understand until he was closer to two. My younger son is almost 14 months and is still army crawling. It bugged me a lot at the beginning because people always told me that I ought to take them into see specialists or acted like something was really wrong. Crazy thing is... now my 2 yr old walks, run, talks in sentences like a pro. Kids are going to go at their own pace. Plus, in all the reading I did (while I was worrying about it) I learned that while they might be slower in one area, their brain is developing in another area. For example, while my second son seems to be even slower in the physical progression (crawling, walking) he seems to show signs for talking earlier than my older son. Their little brains are constantly developing - we just have to be willing to take it at their speed. Good luck!!