Suggest Treatment For Muscle Pain And Frequent Urination With Fibromyalgia

I am a 61 year old female diagnosed with fibromyalgia in 2007. In the past year I have elevated potassium levels of 5.1. I am a natural food person , 5 81/2 tall and 174lb. the doctor never explained the dangers. I take extra magnesium for my muscle pain which can be bad at night I have frequent urination but I also drink plenty of fluids. I have low sugar, low salt diet if any on my foods. II stay away from processed foods. Sometimes I get broken blood vessels in my hands. I do not take meds. my body runs on multi vitamins and therapeutic dosages over the past 8 years. how can I lower the level without drastic measures. I also have chronic fatigue and irritable bowel syndrome. I do not have a uterus and have had a life of severe stress.