You could give them a try, or not. Some people really like Fentanyl, but it seems that most would prefer Oxycodone or another more common Opioid. I didn't think it was that great, personally.
If you do pick them up, please be careful with them, as it sounds like you don't have a really high tolerance. If they are the 25mcg per/hr patches, maybe just start by putting one on for an hour or two and see how that works. Don't start into cutting them up and extracting and all that unless they aren't working for you as indicated. Doing so could result in overdoing it.