my ds just turned 20months, and today while at a play group one of the mothers kept saying things like "thats red flag behaviour". i just smiled and googled when i got home and now im a blubbering mess. My ds, doesnt talk (wasnt worried before: my partner and his 6siblings didnt talk before 2) except for repeating mama dada car chair "dat" (for cat and Gio our cats name) he doesnt use words independently, just copies -when he feels like it. he doesnt point at all for anything ever. he used to wave bye bye but now refuses. he's always (from 3.5-4 months) balanced things on his thumb, anything circular. He can do with out this but if you gave him keys to play with he would put his thumb through the ring and go nuts if you took them back. he does clap if i sing if your happy any you know it clap your hands but doesnt do twinkle twinkle or any other nursery rhyme, he doesnt hand me things if i ask......i should take him to my gp shouldn't I? or am i over reacting??