We've 3 DD's age 8, 5 and 5 weeks. I always wanted 3, DH needed convincing hence the age gap!
However, from nowhere I really want DC4 and have no idea why. I never felt a desperate need to have another child after my eldest 2DD's and can't explain it this time round.
DD3 birth wasn't that fun and my pg was terrible. I am quite materialistic and DC4 would obviously have an impact on family finances.
Those of you with 3/4 or more children - is this the hormones from just giving birth talking or did you just 'know' you weren't finished having your children??
Also, DD3 has slotted easily into family life, did your DC4 do the same or did you feel it was a much bigger jump?