Yes it's very common for a person to have a loss of appetite when they have a Urinary Tract Infection or just a bladder infection in general.
Bladder Infections can also cause chills, shivering, weakness and tiredness.
If you think you have a bladder infection you need to see a doctor to have the bladder infection treated.
You should also drink plenty of water and stay hydrated and drink some Apple Cider Vinegar by adding a tablespoon of Apple Cider Vinegar to A glass of water and drink the glass of water with the Apple Cider Vinegar in it.