How did you decide age gaps between kids?

[Freya]

Dh and I always said 2 children was our limit, esp after my horrible pregnancy with #2 but immediately after I had him we changed our minds and decided that we'd like 3 (Id like 4 but DH drew the line at 3).

Im having trouble deciding on the age gap between #2 and #3 though. Our first 2 are 15mths apart and it was a little hard having a pregnancy with numerous hospital stays & bedrest due to threatened pre term labour but otherwise we like the gap. At first I said I wanted to wait 3 or 4 years but now I think that thats a bit too big of an age gap esp considering how close the first two are. We have to use fert medication to get pregnant too so thats another factor in the decision - it may take us quite a few months to get pregnant so if we leave it til #2 is 2/2.5 they could end up being 3-4yrs apart. I feel like I just want to get it over with, have #3 and then get past the baby stage which is the hardest for me.
We definately wont be able to start TTC til August as we are moving interstate (Vic to Nth Qld) at the end of this month so if I allow for moving time, settling in time, finding a specialist etc it will be atleast August if not later before I can start the meds and that gives us a min 18mth age gap.

• How did you decided on the age gap between your kids?
• Did it change between #2 and #3 and so on? Why?
• If you have your kids all within 2yrs of each other, how did you manage with 3 or 4 little ones under 5?
• If there was a 2yr age gap, what were the pro's and con's of it? Ive heard 2yrs old is the hardest age to introduce a new sibling.

Thanks for the help, I appreciate it!