Please help, I have been put on Fentanyl patch first 75, then 100. I am getting ZERO effect. The dr. Had me get a new box In case they were a bad batch. I have left them on as directed and I have zero effect at all. I was not on a particularly high dose of Oxys before that. I know people will freak out when I tell you I even but on 2 patches at once, yes I know that was very dangerous, I had my wife watching me but I still had zero effect,not even drowsy. I have change position of patches, what is going on? I have only been on pain meds for 3 months.