Levi, some people have trouble with the acidity and/or the fiber in the pulp. Sometimes I've found that to be the case for me and other times there's no problem at all (I've been eating plenty of clementines in the past month or so, yum!). Different things bother different people. For me, I figure it probably depends where the inflammation is when something unusual bothers me.
This whole business is highly individualistic, so, if it doesn't bother you, eat the orange!
Age 53. Diagnosed UP 1983, Azulphidine
Diagnosed UC 1986 Prednisone almost 2 years
Asacol - 16 pills/day, Rowasa
Metamucil - 2 doses/day since '86
once a day, with one dose Metamucil per day
VSL#3, Ultimate Flora Critical Care
Vitamins, Calcium and D, Flax Seed Oil
Bee propolis, melatonin, slippery elm
homemade yogurt each day
Ryzolt for arthritis pain