I agonised for ages about when to ttc #2 having had DS at 33. Having originally thought that we simply wouldn’t use contraception and would start ttc properly when DS was around 6 months old, we ended up waiting until he turned one, partly because of my own misplaced loyalty to my job.
Fast forward 13 months, and despite 15 cycles of active ttc, we’re still not pregnant. In fact, I suspect that we’ll end up needing IVF to even have a shot at pregnancy this time around.
This post is obviously coloured by my own experience but having conceived fairly quickly 3 times in the 11 months it took us to get pregnant with DS, I never thought we’d end up with secondary infertility. If it can happen to us, it can happen to anyone.
I don’t want to scare you, but if you want another, I would go for it sooner rather than later, as you never know how long it might take.
That having been said, I doubt 2 under 18 months would have been for me, so think about what you really couldn’t cope with gap wise and work from there. It’s so hard to plan these things to perfection, and the chances are, whatever gap you end up with, you’ll probably think it’s perfect.