My husband and I are in our early 30s we have 2 kids boy 7 girl 5 we are thinking of having a third I had previous si joint problems with both pregnancies and have worries with doing it again also we are now an established family who has kids that are that bit more independent so don't know if this is the right thing we both long for a third but are we crazy??? Do you ever regret not having or having a third.