I am looking for some advice if possible. My DS is nealry 9 months old and is not sitting up, crawling or rolling over. Should I be concerned? Have any other parents had this? I spoke to my health visitor yesterday who said he should be doing all those things and may need physio if he doesn't do it soon. She accused me of leaving him in his cot all day (which I definately do not do) He has a play gym, he sits in his highchair (which we recline for him) and he has a baby walker and we also sit on a blanket in the lounge and I try and encourage him but it has not happened. The health visitor has worried me a lot. Please help!