Aaaaand here comes the confusion as to why I’m not happy to reduce my life to ‘mummy’ and devote myself fully to another human.
Look, if you’re mentally breaking down the world of other mothers into “ones who are totally happy to lose themselves entirely and become only Mummy” and “ones who hate their life because they can’t” then it’s going to make it tricky for you to get much useful advice from anyone else’s experiences.
I’m sure there are a few women who are happy to lose themselves entirely, but for most of us, no we aren’t. We aren’t just Mummy-zombies with no lives or interests of our own. That is not the price you pay for hammering out some enjoyment of life now, rather than waiting for some distant point in the future when your child isn’t making demands of you.
I think you should talk to your GP or HV, because while you’re convinced you’re not depressed you really do sound like you’re going beyond disliking the baby stage here: you have some very black-and-white thinking, you don’t see any joy in any of your life, you can’t picture a way out. Yes you have dealt with depression before but depression doesn’t always look the same, even for the same person.
But if you won’t do that, then all I can do is share my experiences as someone who really doesn’t like the baby stage (I’m fine with newborns and age 2+) but has found ways to find some joy in that phase all the same.
You have to change what you’re doing now when it’s not working for you. You say that neither you nor your partner feel confident looking after your son alone for long - change that. Tag-team. What’s he going to do with only one parent there? Scream? Oh well, toddlers scream sometimes, some more than others. Build that confidence, give each of you a break.
You have to battle on with adapting things you want to do to doing them with a toddler present, where possible. All-night parties in your house probably not, but a walk in the woods is doable. I know you think it is insurmountably difficult but this comes back to why people are telling you they think you sound a bit depressed. Again, I have been here. Put headphones in and play music to mute the screaming.
You have to try to coax yourself out of the mental mindset of “well I can’t do the things I want, therefore it’s all just going to be shit until the baby can take care of himself.” Easier said than done, but at least start off from the principle of recognising that many others of us have managed to eg take demanding 1-year-olds on woodland walks and find a way to enjoy it, and it’s not because we’re all happy losing ourselves entirely.
You have to let yourself grieve for the things you have temporarily - temporarily! - lost. It is reasonable. Sit and cry about just that if it helps, I have. And then wipe the tears away and say “okay, there has GOT to be a way I can at least snuggle under a blanket with a hot chocolate and a book like that magazine suggested, how do I manage that?”
Again, I think you should speak to someone about PND. But if you really won’t, then I urge you to recognise that you’re not as alone as you thought - lots of us have found various stages hard going, most of us find this age relentless, lots of us have had very screamy/demanding babies - and listen to the people who are telling you they found a way to enjoy more of their life all the same, not write off anyone saying that as unable to understand you and listen only to the voices saying “yes it is bleak and hateful and nothing can ever make it better.”