To me, this sounds like it is pregnancy related. I have had the bloating, distension and nausea at night throughout my entire pregnancy - even now at 36 weeks. It has gotten worse as the baby has gotten bigger. The only way I found to manage it is to eat smaller meals throughout the day, as opposed to large meals. Your uterus is growing with the pregnancy and is pushing on and crowding the orgrans in your gut... this is what causes the discomfort. The pregnancy could be causing the constipation, too. That is pretty common in pregnant women.
That being said, your UC is obviously still flaring, so I agree with Red. You should discuss this with both your GI and your OB to make sure everything is alright.
Hang in there! Things will likely improve during your second trimester.
- Asacol (4 pills, 3x per day)
- Rowasa (1 enema daily, as needed)
- Folic Acid (1 mg, 1x per day)
- Calcium (600 mg, 2x per day)
- Prenatal Vitamin (1x per day)
- Iron (2x per day)