In July I Was Feeling Weak, Nauseated, Constant Headaches, Stomach

In July I was feeling weak, nauseated, constant headaches, stomach upset, vomiting, and my doctor placed me on medication for a UTI. But also had me do various tests: blood samples, stool samples, drank something and had to blow into a bag, etc. The result was that she sent me to an ER because of my creatnine(?) levels she called it signs of renal failure. I was placed on different meds and now in October I went back to the doctor because of recurring dizzy spells, continuous lower back pain, inner ear ache and itching and feelings of nausea when I eat. A UTI was diagnosed again. My doctor sent me to the optometrist who found that my optic nerve is too large in both eyes and is sending me to the ophthalmologist for glaucoma. She was concerned that in my family history my father had tumors removed near his ear and he suffered from ear infections and asked me to be referred to an ENT. I mentioned many symptoms and I am not quite sure which ones are related to each other. I am only 42 years old. I've had some high blood pressure issues nothing extreme but recently my doctor found I have low blood pressure. I feel symptoms of various kinds almost daily. I get woken up by pounding headaches. I often have dry mouth. I am taking omeprazole, meclizine, and ciproflaxin. I'm not sure what to do next.