Hi there Goof,
I have Crohn's Disease, have had it for 7 yrs. Was on all sorts of meds and Imuran was my biggest concern. However my Gastro assured me that its safe in pregnancy and that as long as you go into pregnancy in remission you have an 80% chance of holding onto that good health or even improving throughout it.
I was lucky, I was in remission after yrs of trying to stop frequent flaring and now am not on any meds for Crohn's (I was at the start of the preg but kept throwing them up so we stopped) Sounds like the failing placenta was due to flaring, it can do awful things to us thats for sure. Thank God your bubba was OK.
x x x