Thank you so much for all of your messages and thoughts.
We were told today that our baby boy has an extra X chromosome (so XXY), known as Klinefelter Syndrome. The possible effects are variable but may include delayed speech development, slightly lower IQ, short attention span, sensitive and shy, taller than average, low testosterone and infertile. However, our baby also has the mosaic form, meaning that out of 60 cells that they looked at only 11 were effected so it's likely to be a much milder form. The effects will all depend on where in the body the affected cells are. There may not even be any obvious effects. Most people do not even realise they are effected and the majority are not diagnosed until they have trouble conceiving.
So, we feel like this is neither bad nor good news. It's not what we had pictured and it will be a waiting game as to the effects but the news could have been a lot worse. DH is being more optimistic than me though. I can't help but think of the worse case scenario and have made the mistake of looking at Dr Google which has painted a much worse picture

. This is what we've been given though and will get through it
...... DH's words, not mine.