I usually find myself feeling a bit irked when someone is pregnant with their first child and devastated that they’re having a boy, not a girl (tbf, most posts on MN do go that way around), mostly because it’s to do with ridiculous preconceived stereotypes and also they might have another baby in the future.
Your case is different. You gave boys, you know they’re wonderful too and haven’t boxed them into stereotypes. It’s not wrong to want to experience raising a girl too and, being your last baby, I can see why the pressure feels on. I expect you also know that you’ll love this baby to bits when it arrives regardless of its sex.
I have a boy and currently pregnant with second baby. We found out through the Harmony test (following a Down Syndrome scare) that it’s another boy. My first reaction was to burst into tears...... completely unexpected and totally shocked myself!
I can genuinely say, hand on heart, that prior to the result I had no conscious preference. Given that we had literally just had a Down Syndrome scare and were facing some big decisions, all I wanted was a healthy baby. I love my boy to bits and would be quite happy with another. I also quite like the idea of same set siblings as (While no guarantees) I think they’re more likely to share interests and get along. My husband was shocked as my reaction too and was worried for a good few weeks that I was really upset about it and not telling him. In reality, my reaction lasted only a few minutes and then I was fine.
Anyway, I tell you this simply because I realised that I wasn't crying because I was having a boy. I was, briefly, mourning the little girl I would never have. I didn’t even have a preference for a girl, not consciously anyway, but I knew this was my last baby (two HG pregnancies, can’t face another) so it suddenly just slapped me in the face that was it. I’d never have a girl. Tbh, I might have reacted exactly the same if it had been a girl - I probably would have been sorry for the two little brothers I’d pictured bonding over their train set.
I think last babies being out all sorts of emotions, and it’s ok to feel them. For me at least, my brief “disappointment” at not having a girl was entirely separate from the baby I’m having. I’m in no way disappointed that I’m having him. It was simply a reaction to something I knew I would have (and hadn’t even been aware I wanted). I hope this makes sense. You’re not a monster for what you’re feeling, it’ll be fine whatever happens, I’m sure.