My baby is becoming a anti social..she just doesnt mingle in a crowd n sticks to me..is this normal behaviour??

Maybe your bubs is going through separation anxiety right now? My older daughter was like that. Each time we are in an unfamiliar environment, she clings onto me like a baby kuala and wails if anyone tries to carry her. She grew out of it though and now is one of the friendliest child I've ever seen before.