My mom having fever, weakness, headache from last 45days.. we went to a doctor he said she having Urine infection then doctor gave medicine.. then given injection for a week still not recovered then we went to Urologist who having MCH and then he gave medicine without any test we ask to him for test but he is saying test is not required.. do know what to do whether we admit my mom in any other hospital.. pls please help me

Your mom seems to have things under control. So let her keep seeing the doctors.

A lot depends on what country you are in and how good health care is there. Also her age, history, and general health. No one online can possibly help you.
Urinary infections can move up into the kidneys, but that's not for anyone here to diagnose - just a guess if she continues to be sick. Out of dozens of ideas!