Im no spring chicken myself and we wanted to have a second bub so the two are close together in age.
About a mth ago I fell pregnant and was on top of the world but bub had a very low h/beat and I eventually lost s/he:-(
Then on top of that found once Id had a d & c that it was a molar preg which now means we cant even ttc for 6-8 mths.
The Ob has advised us against it. Really PO'ed about it as you can imagine!!
So my answer would be close together if you CAN...