Just to add on to everything already posted, I am pretty sure I was flaring when I concieved in 2/06, and was fine until my 2nd trimester, which was hellish. Pred. helped a lot, but the side effects were NOT fun, and my Dr. predicted correctly I would go into remission in my 3rd trimester--something about changing hormones. My daughter was and is completely healthy, though the big 'but' to mention here is post-partum flaring. I was good with just Asacol(Ha! Those were the days!) until my daughter was about 4 months old and began to flare on and off for several months, went back on pred., became steriod dependent and ended up going on Imuran and Canasa/mesalamine enemas which helped me immensely and continue to today. From reading many posts on many sites, apparently this is somewhat common, with all the physical and emotional stressors a baby can bring on. Now I am contemplating another pregnancy (on Imuran), which is a whole other topic...
Diagnosed with UC in 2004
Had flares all through pregnancy last year, and current flare on and off for about 6 months, Imuran helped me get off Pred. and get into remission!!
Currently on Lialda, Imuran 75mg,
prenatal vitamin(taking for folic acid and other nutrients), calcium, and Bifidus Balance FOS probiotics.
Mesalamine enemas as needed...