Throbbing sharp pain on left side near hip bone and under rib cage. Feels tensed and hard. Chest hurts to breathe, UTI, nausea and vomiting. Help?

UC/ER. Sounds like you need to be seen by a doctor soon. Urgent care or ER. At the very least they can prescribe medication to ease the nausea and vomiting and make sure you are being treated adequately for pyelonephritis if your UTI is not a kidney infection.