I have had a common cold the past week. Stuffy and runny nose, sore throat and fatigue. It is pretty much gone now but i am still fatigue and when i pee, which has been more frequent, i feel like i havent peed and theres nothing there when i go to pee again. I also woke up yesterday with one side of my back sore, but it might have been from yard work the previous day. Could this be a bladder infection? I am a 16 year old male. Also, when i drink more water, my pee is perfectly fine. Clear. Its normal color. Maybe a bit cloudy