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Based on the symptoms, you do have an UTI ( may or may not be secondary to urinary stone
Taking anti pyretics like Paracetamol
will control the fever
and also blunt the chill response.
You also need to initiate an antibiotic ( in case if you have some at home) preferably a fluoroquinolone like ciprofloxocin or ofloxocin or norfloxocin.
If you dont have any antibiotics at home, just take a paracetamol tablet ( 500 mg 0r 650 mg) once in every 4 hours. Take on more dose of soda bicarbonate in case if you have severe burning micturition.
Wish you a speedy recovery