Thanks for your query.Based on the facts that you have posted it appears that you have acute UTI.mostly Cystitis
This is very common in the summer and is due to highly concentrated urine which is predisposing factor to get UTI.
Get your urine routine and culture done to find out organisms causing infection and the antibiotics to which they are sensitive to.
In the mean while take broad spectrum antibiotics and urinary anti septic drugs and urine alkaliser for a week after consulting your family Physician .
Consume more water to keep your urine dilute r>
It should get cured in few days.