I have been on Fentanyl patch 50 for about 23 days. My pain is just about gone and the patch is causing me difficulty a lot of breathing and swallowing. Also, the patch is a major interaction with a cancer medicine I must begin to take. So I just took it off. After about 36 hours, there were no withdrawal symptoms. My doctor said I can't just stop, and prescribed a 25 patch. But I didn't put it on, as I felt fine, in fact was no longer breathless. It's now been over 60 hours , and I still don't feel anything, except diarrhea, this morning. My question is: will I definitely get withdrawal symptoms, or can I just take Imodium for diarrhea and Oxycodone for occasional pain?