your pain is consistent with urinary tract infection, although there could be other reasons as well.
UTI is often accompanied by fever and chills.
suggest you to drink plenty of fluids, which includes not just water.
UTI pretty much clears itself by good hydration as the bacteria gets washed away when you pass urine.
if the pain still persists, do contact your physician and get yourself checked out. you may need a urine test.
Dr Anil Jain