Hi, I am the mother of a 10 month old and applying to start CRNA school (babe will be a year and a half when I start.) Based on your experience I would probably encourage you to start CRNA school first if your age allows it. I think it is too hard to start with a tiny baby, because they change so quickly in the first few years and you will miss so much. Of course, it's a totally personal decision, but you have to be prepared to miss being the one baby wakes up to in the morning and miss a lot of bedtimes, etc. I am willing to do that, but I know many mothers are not.
I always remember the saying that says something like "make plans and God laughs," but if I were in your spot I would plan to start CRNA school ASAP and try to get pregnant towards the end of school. School is relatively short, so most women applying to CRNA school have the benefit of being able to apply to school and attend before running out of childbearing years.
The other thing to watch out for is that you are 10 years out of nursing school
and in terms of CRNA school your undergraduate classes are starting to get old. Delaying school to have the baby now would lead to the possibility of being declined because your prerequisite classes will be that much older. Best of luck. I have also struggled with the baby vs. school and it's a common concern for many women.