It's very much recognised, and again, it was debilitating, I wouldn't wish it on my worst enemy.
When I was with my first DH, we planned to have a child. It didn't happen. But we both spoke about how nice our first son would be. It was a preference.
With my now ex, as soon as I was pregnant, it was my daughter. At the 20 week scan, it felt like my world imploded. I collapsed. I cried. Every day, until he was about 10mths old. I couldn't function. I mourned my little girl and stared blankly at the child that wasn't mine who had taken her place. There must have been a mistake. This was not my child.
My son at 11, has no siblings, because I was so petrified of getting GD again, that him being an only child seemed a far better option. Anything but put him, myself, and another child through that.
I'm now with DH2, and we're expecting twins. He doesn't know about my prior GD and wanted to know what we were having. Turns out one of each. And it feels so weird. Because I'm not bothered at all. Two girls? Sure, whatever. Two boys? Sure, whatever. One of each? Why not. I'm just excited to meet them! It's almost inconceivable to me to feel like this. Is this how "normal" women feel in pregnancy?! My god, how unrecognisable from last time.
I feel so sad for DS, and the cloud he was born under. Now I see how it is to feel "normal" this time round. I can't change it though. I was sick. I needed help and although I got it eventually, I didn't get it soon enough. And I didn't because of so very many threads like this, convincing me I was nothing more than a spoilt, self indulgent brat who didn't get what I wanted.