Leash - i think there are many things to take into consideration here - some of the stuff that Nae mentioned with Shel is probably playing on your mind to a degree and may be impacting your thoughts - as much as you have, in the past, talked about her being the tummy mummy next time and then being the SAHM with both kids, and given she's not being very helpful with one, it would have you thinking a lot about what impact it will have on not only your relationship, but the way your kidlets are raised

i also think you've done it tough to not only get Jazz (AC is damn hard) but to get through to now with BF issues, and essentially (no offence to Shel) being a single mum a lot of the time. Shel is there for some support, but your relationship has been pretty rocky and, from a physical standpoint, you've done most of what has needed to be done for Jazz. she's still a baby, but she's past that fully reliant on you part of her life - she is independent to a degree, has developed a personality - and now she's company for you, not just a baby that needs you to do it all for her.

thinking of TTC again in a year has to be pretty full on - not only are you contemplating Jazz being a little over two and going BACK to newborn stage, you're thinking of who will carry the baby, what impact it will have on you and Shel etc. maybe now just isn't the right time to be thinking about it. there is so much to think about when contemplating another child - and in your circumstances, nothing is left up to chance - you HAVE to be calculated about timing, you have to be able to organise finances. it's scary stuff, ESPECIALLY when you're feeling content in your life

as Nae said - give it a few months - see how you are feeling as an individual, a partner, and a mummy - and if you think that you only want one still, then so be it. there is nothing at all wrong with being an only child. if Shel thinks you NEED to have another child, then you need to work through the issues you have so that you're on the same page re raising two, joint parenting responsibilities etc...