I Had A Double Bypass Open Heart Surgery 2 Months

I had a double bypass open heart surgery 2 months back and they took veins out of my left leg. They tried to take veins out of the right leg first, but couldn't locate it. They sewed the right leg up and took them out of the left leg. My right leg hurts. My left leg does not. My right legs hurts all the time and I can not really pinpoint where the pain is, I just know it is around the knee and upper thigh area. What can I take to stop or at least dull the pain so I can sleep? I have tried percoset to no avail and morphine is too strong and interferes with my job. Any suggestuions?