I wouldn't worry too much about not crawling. A clinic nurse has told me recently that crawling isn't even on the developmental 'checklist' anymore because some babies just don't crawl - they head straight to walking .

Does your DS have good control if sat upright by himself? Also, as he loves to stand (which IS on the checklist), I wouldn't worry too much as he seems to be doing just fine.

My DD started crawling a few weeks ago and people don't believe me when I say that she is mobile - and not just bum-shuffling - real crawling on hands and knees.