Lots of good advice here.
I understand that you feel kind of overwhelmed at the moment. Try talking to your dr again and if that doesn't work, seek a second opinion. I don't know much about pain meds, but it's understandable that they work less and less well as time goes on. There may be alternatives for you to check out, such as herbal remedies, physiotherapy. acupuncture or something like that.
Have faith that you can get through this.