Nutrition: Stay away from sodas

I am now in a dilemma. I love a certain coffee colored soda. I am 40 years old. I heard that soda eats up your bones. Now I have noticed two things:
If I drink soda before I go to sleep, I wake up with a backache
If I don't drink soda for a day, I wake up with minor pain.
That is not my only concern. My thumbs are hurting like a 90 year old with arthritis pain. Now I am scared. I don't want to get arthritis. I don't want to walk like an 80 year old person. My only logical escape is to knock soda out of my diet. This is not about the sugar or the calories, this has to do with my desperate attempt to keep my bones healthy.
Does this make any sense? If someone knows a nutritionist that can either confirm or deny my suspicion, please let me know. Thanks. Keep trying.