My son is 3 years 6 months old and he is still saying single words only and not able frame sentences. He is going for nursery school also but no improvement till now. He will say some long sentense in some child language which we cannot understand.We are from Vizag. Evenone is saying boys will speak lately no need to worry etc etc but my BP is increasing day by day due to his condition. Kindly advise me the right direction and solution for actual problem. Regards Prasad.