Kandi, this is a good reason to always look up your meds for yourself. We're seldom warned of all the possible side effects.
On the plus side, I had mild diabetes by lab when I was on steroids. Since I've been off, my labs have all been in the normal range. In the meantime, diet and exercise may well control your blood sugar well.
I understand your shock, though. This was the point at which I requested anti-depressants. One more diagnosis was just more than I could take!
Moderate to severe left-sided UC (21 cm) diagnosed 2001.
Intolerant to Asacol and rectal mesalamine preparations.
On Prednisone then Entocort 2001-2006 with only short periods off.
Current meds are Colazal, Azathioprine and Remicade. In remission since April, 2006. Remicade has been my wonder drug.