I had a bladder infection on Friday and the Dr gave me 3 days worth of antibiotics, I will be taking my last one tonight. The Dr said that if it got any worse over the weekend I have to go to the hospital as it could develop into a kidney infection. I have never had a kidney infection before so I'm not sure on the symptoms but I have a cramp like feeling in my lower back and it aches. I took some strong painkillers this afternoon and they did the trick but now the pain is back. I really don't want to go to the hospital unless it is absolutely neccessary!