On of the things to check if you're PI is to have a fecal fat study done. I just wrote an article about it.
Visit my blog <a target=_blank class=ftalternatingbarlinklarge href="http://understandingcysticfibrosis.blogspot.com/
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Another article that might help you figure out what's going on in the BM department is to read the article <a target=_blank class=ftalternatingbarlinklarge href="http://understandingcysticfibrosis.blogspot.com/2008/01/understanding-bowel-movements.html">Understanding Bowel Movements</a>
Since the pancreas is in charge of secreting enzymes and regulating blood sugar, the fact that you had problems with both your digestion and your BS, is a sign that something is off track. The fact that you passed a lot of oil is very indicative that you may be having PI issues. Talk about it with your doctor and maybe s/he can recommend a fecal fat study, and do other diagnostics.
In the meantime, do NOT use kaopectate or pepto bismol to control the loose stools. They can create a bigger problem than they solve and are not recommended for CFers.