Hello. I posted back in October after I had my son 5.5 weeks early. I wasn't the most rational as I was really worried about him. Well he's now 21 weeks and weights 15lb he's 50th for weight and 25th for height adjusted. He smiles and is happy. He sleeps through. He's trying to talk aswell! We meet with other mums and he's bigger than some of the full term babies. Thanks so much ladies for knocking sense into me !