Thank you all for your words. I know I should be excited. Everyone keeps telling me that I should be grateful everything is going so great with the pregnancy. I was told that this is an extremely healthy pregnancy, everything and every aspect of it seems optimal, and don't get me wrong I'm really glad that's the case. But, even though I have been convincing myself it was a boy all along (I was told 70% sure it was a boy on my 12 week scan), I couldn't be happy or excited at the moment I was told for sure. I wasn't expecting it, I really thought I had convinced myself already, but I hadn't.
I know it's just my first baby and that I can still have a girl, but in the meanwhile other issues came to surface. I'm married to a woman, and even though she doesn't want to get pregnant, she would like to have a baby related to her biologically. I told her I don't mind carrying it, and I really don't. But that would mean go through IVF, and the odds of twins are high. And if we have twins next time, that's it, we would be done having children and of course one of them (or both) could be a girl. But I started to feel something I had never thought about: if that was the case, I would never have a biological daughter. I don't know to which extent this makes a difference or not, mainly because I don't have kids yet, but I always wanted a little girl who looked like me a little bit. That got me thinking: why was it so important for me that I could see myself on my daughter? and the obvious came to mind. I had a pretty awful childhood with a terrible mother who never really liked me and always adored my brother. I honestly think she didn't like me because I was a girl. Today I don't have a relationship with her and that's for the best, but this had an enormous (negative) influence on my life, and I feel I never truly healed from everything that happened. I know I will love my little boy to bits, but I can't help wanting a biological daughter to be able to give her the childhood I never had and to witness how loving a child unconditionally changes her way of being in life (I'm pretty sure a lot of my issues have to do with me being insecure because of my childhood). Is this awful? Will the fact that my next child (if girl) will not have a biological relation to me make that much of a difference? I feel so guilty about all of this, but this is how I'm feeling right now and I can't deny it. I didn't tell this to anyone but my wife though. I think she didn't understand it completely, but she tried.
but I think you are absolutely right, the most plausible thing to happen, if we do have another child born from me but from her egg, would be for me to see mannerisms and things they learned from me and to identify with them the same way. 
