Congrats on your pregnancy!! I am currently 40 weeks and was diagnosed with UC during my first ever flare at 20 weeks. Although it is getting more uncomfortable to do with my big belly, I have been using Rowasa enemas only this entire time - all my dr's have said it was safe and only a small amount crosses the placenta.
I have seen a high-risk OB for extra ultrasounds each month which is OK with me because I got a bunch of pictures! Our baby is right on target for growth so none of this has effected him in any way.
I have read that being pregnant can make UC worse, better or the same. So that is not really very helpful. I also read somewhere that when pregnant you respond better to meds if you need them. But I'm not sure if they really know.
Good Luck with everything and don't worry - you guys will be A-OK!
DX moderate UC Sept 2010 @ 20 weeks pregnant
Rowasa Enemas every other night (initially nightly)
Align Probiotic, Prenatal vitamin, Caltrate D3 Feeling normal again :)
Pregnant with a BOY! Due Jan 13