did you ever try other things than medicine (herbal or not)?
i had plenty of patients getting better with therapies that work on the electromagnetic field of our body or healing techniques like Reiki, try it.
also if you have existing misalignments in hip, sacrum or spine nothing will realy work. for that the Dorn Method is definitely the best.
check my website: http://www.dorn-method.com click on self help exercises and try to do them often to see the result.