All of you who guessed arthritis were right. The sports medicine doctor did an ultrasound of my hands today and found quite a few spots of arthritis. He asked if my mom has arthritis in her hands and I said she did. He said mine will probably get worse. Right now it can just be treated with ibuprofen and he said if I get pain in a joint for several weeks he can do an injection. At least I know it wasn't all in my head.