I'm really worried my 18 month old is behind where she should be and I think it is my fault. She can understand and follow basic instructions such as 'get your shoes' and 'can mummy have a kiss?', and she caj say some words like mummy/daddy/baby and she often points to various objects and says whats that. She loves musical toys and her hearing seems fine, but I keep hearing how other children her age are speaking in full sentences, know their colours and are counting to 10. My older daughter is 5 and she didn't speak till she was 2 and also seems somewhat behind her peers (teachers and nursery staff have never mentioned anything, but again other parents say their 5 year olds can do a hell of a lot more than she can). I don't mention my worries in front of the children but I am very worried that I am failing them and letting them down because I don't know how to help them, I can't get through to my health visitor what so ever at the moment and with my eldest they said they don't worry until they are past 2 years anyway.