Bladder infections can be debilitating and painful. You will know it if you have one. The best thing to do is to catch it early on, by recognizing the symptoms. There are many of symptoms of bladder infections. The most common symptom is a frequent desire to empty the bladder, along with a burning sensation or even pain during urination. In some cases, the urine could be cloudy or foul-smelling, accompanied by a mild fever and shivering.