I lately have a sudden urge to pee all the time, and when i do pee its only a little, and immediately after i have the urge to pee again even though i don't. My bladder feels like its full and when i walk it feels like it is full. When i am peeing it doesn't hurt but once i am done and the last drops are coming out i get this pain in the lower part of my stomach, like a sharp pain. And on the right side of my lower back it hurts, its been hurting a bit. I talked to some people and they think it could just be because i am getting my period soon, but its never happened to me before. Does anyone know what this could be?