I would certainly mention your pains and aches to your specialist. My myeloma was diagnosed in March 2010. For approximately 9 months prior to the diagnosis, I would experience some strange aches pains in my hip, under my rib cage, around my kidneys and in my back. The pains would come and go. I just thought that I had strained certain parts of my body due to lifting heavy boxes at work. For five months prior to diagnosis, I underwent various x rays and scans to try to detect the cause of the pain, but unfortunately three vertebra collapsed in February 2010 before a consultant recommended an MRI scan which eventually diagnosed the lesions in my bones caused by myeloma. At least with you being already identified as smouldering, your consultant will be able to carry out further tests to detect whether your myeloma is the cause of your aches and pains.
Take care.
Jan