It just really upsets me when my co worker is always bragging about her son. He's such a big baby and he's 2 months younger than my son but he does a few things my son doesn't do so I know my son isn't doing things because he's chunky because her son is huge! He holds his own bottle now and my son still doesn't do it fully well to hold it up. My son is 9 months. He's not crawling yet either but I checked the developmental checklist and he's reaching those milestones. I may be overreacting but it just makes me worry a little bit. He's 9 months and I'm taking him for his check up in a few days. Should I be worried. Please tell me my son is just fine. My friend hurt my feelings by calling him lazy.