Hi.. I am suffering from urine tract Infection since last 3 days . While urinating there was blood at the end and also it was painful.. Since yesterday morning I am experiencing a severe back ache . I went to a doctor yesterday who has given some antibiotics. There is no improvement in the back pain. I also got my periods yesterday so can't say about the blood but the pain while urinating has gone.

I wanted to know if its kidney Infection

Antibiotics need some time to work, you can't expect miracles in less than a day. You will need to give it a few days and if it hasn't improved, then you will need to go back to the doctor.