Why is it that when I take Ibuprofen or vicodin (pain killers) my kidneys hurt so bad?

I just had a hysterectomy about one week ago and the doctors gave me Ibuprofen and vicodin for pain. My kidneys started hurting so bad I thought I was going to die. I stopped taking Ibuprofen and the pain went away alot but still had the pain. I finally stopped taking vicodin and the pain completely stopped. I told the doctors I didn't want to take Ibuprofen cause my kidneys start to hurt everytime I take it, but they said I need to, cause of swelling after the surgery. Now vicodin is making them hurt also. It feels like I am having kidney stones. If anyone of you guys had kidney stones you know it hurts like hell. But I don't have kidney stones though. So what I am trying to say is is there something wrong with my kidneys? I tell the doctors all the time but they look at me funny. I just want to know if anyone knows anything or has any similar problems. Help! Let me know so I can tell the doctors. I would appreciate it.