My son is 12 weeks old now and still hasn't smiled yet. It was noted at his 6 week check that he hadn't smiled so we were referred to a pediatrician who said he didn't think there was anything to worry about, and that the fact he was 2 weeks early and quite poorly the first week or so after birth may be playing a part and that he would expect him to have smiled within the following few weeks. It been 6 weeks now since we seen the doctor and he still hasn't smiled. He laughs in his sleep but his face doesn't move while he giggles. Has anyone else experienced similar and their baby have no problems? The doctor mentioned to me straight away that not smiling may be an indicator of aspergers. It obviously wouldn't bother me either way but I'd just like to know what to expect. Is it normal to smile later than 13 weeks and be okay or should I assume that he may have some sort of autism as the doctor suggested?