Pain on lower back right side, and under right ribcage. What is this pain?

Whether you have scoliosis or not, im not really sure but to more easily figure out what you truly have, think back, if you had ay fall,hit,strain, etc. It may possibly be one or multiple slipped and herniated discs.which may be leadig to the cramps in legs and arms.Honestly all i can say is be persistant, also make sure you get an MRI, as it may reveal the problem at its source.And as far as diabetes,I doubt it, I have four slipped discs and sciatic nerve damage, as well as degenerative disc disease and still manage to regularly workout. So basically you shouldnt have it that bad.