I have been very close to my stepmother since I was about 4.I grew up with five other half bros and sisters spending time between Mum and Dads.I now have two children who have called Step-Mum,Grandma absolutely.She was the first to meet them in the delivery room etc..and I have always sent cards/presents and little snippets of info regarding their schooling and so on.Anyway yesterday she posted a msge to my sister n law who is married to my half brother and pregnant 'cant wait to meet my first grandson'.I am hurt and feel strange about it.We have always been so kind to each other and I am now thinking 'what is my son??'.I know 'technically' it is but we have never thought like this?I dont even mention that my bros and sisters are in fact 'halves'?I have just flown across the world to see them all and feel very upset by the situation.I am not usually like this but it is really affecting me?