Melissa - I definitely want no.3!! We're only in a 2br unit which really limits us at the moment but we're hoping to have moved by the end of next year so hopefully I'll start ttc about midway through next year so hoping for not much more than a 2y gap between the next two.
I've found an 18m gap to be great. I don't have any issues but of course I haven't done it any other way. I figure you're still in baby mode so you may as well just go for it!
I found I started getting clucky when Louis was around 4 months and by 6 months it was full on. At 9 months I went off the mini-pill and fell p/g that month! Was still bf and af hadn't even returned!
Personally, I think it's hard having a newborn so really it doesn't matter how many kids you've already got it's the newborn thats hard work iykwim?? Louis is cruisy to look after compared to Dylan. All I've got to do is change his bum and get him his food but he's not half as demanding!
OK...I'm ranting...