L.C.
Hi H.,
I'm a very fortunate older mom. I had my first child at age 39 via C-section. Two and a half years later, I gave birth (naturally) to my second child a month before I turned 42. My Ob-Gyn did not advise me to wait between pregnancies. Being healthy and active probably didn't hurt me. I worked full-time during and after both pregnancies (took only a short 3 months maternity leave each time). My kids are now 13 and 10, and get along well. I think the 2.5 years spread between kids is working well for us. They look out for each other and still goof around together. Sometimes, having kids can't be completely planned out.
Good Luck,
L.