I was diagnosed when my second child was 4 months old, and we weren't/aren't sure about having more, so I also quizzed and double-quizzed my docs about pregnancy/ANs! I also quizzed them heavily about possible links between all the extra estrogen during pregnancy and the rate of AN growth (since I woke up one morning halfway through my pregnancy with 80% sudden hearing loss). Unfortunately, there's little conclusive evidence one way or the other about the effect of estrogen and other hormones on ANs. I also wonder since I have a "fast-growing" AN (based on 3 consecutive MRIs) and I've been either pregnant or lactating since 2001, except for a 6 month break before my second pregnancy. Makes one go Hmmmmm.....
In any case, last fall my neuro-ENT told me that if another pregnancy caused rapid growth, they'd just do surgery shortly after I had the baby. This made me want to pre-emptively remove it for many reasons:
1) Immediately post-partum is not an optimal time for any kind of surgery. Can you imagine?
2) I tend to get post-partum depression for several months - again, not a good time for major surgery!
3) I wasn't willing to risk my ability to nurse a baby b/c of meds/hospital stay/recovery from surgery. But that's my own "thing".
BUT... my AN is already starting to press on the brain stem, so further growth would start to get into big problems. (In May, after the 3rd MRI, I was told to "please avoid another pregnancy" until the sucker came out.) It sounds like you're in a very different situation with your AN, which is a good thing. I just wanted to share that I'm at a similar life stage, and what I was thinking about, and how I made my decision. Maybe it'll give you ideas of some more questions to ask your docs if you want.
Katie