please what about CT scan, can it help?

Hello friends!!! please I have serious health issue. I feel this hot sensation all over my body, especially at my waist front and back. I do have constant headaches n dnt sleep at night unless under a fan. This sickness has lingered for like 7months now. My urine tests n culture dnt show anything, but the altrasound I did revealed UTI(cystisis). I have taken several antibiotics including Triaxin n rocephin(intravenous). Still no relief. I have gone for HIV tests twice n it read negative. Pls I need urgent help!!!!