My LO is nearly 5 months and for the last month he has become very clingy - crying inconsolably if anyone apart from myself or my DH holds him. My SIL, who's a childminder, remarked yesterday that in her 20 years of looking after children she's never come across a baby who cries when picked up by anyone other than his parents. This has made me feel awful - have I done something to encourage this behavour? He's my first and I feel that I've done nothing right .