Hiya 
My first child was born when I was 29. I have always wanted a 4 year age gap, so the DC would be at school. I am 33 and have just had my second 2 months ago. We were lucky we got the age gap we wanted and I do know that.
I plan on another 4 years for the 3rd but if it doesn't happen, that okay and I'd rather have the 2 we have than another DC less than 4 years from now.
DH is claiming I'll be too old at 37!!
and we should start trying "soon"! Our second is only 2 months!
AIBU to think 37 isn't too old?