feeling tired, dizziness, lower back pain(both sides), frequent urination, not concentrating, fever(the body t ) hi, i was wondering what may cause being tired ,dizziness, lower back pain(both sides), frequent urination (i had 2 very strange weeks of these so i stoped taking water if i dont have a chance to be around a WC facility...), and it seems like i am not concentrating as i usually do and i feel like i am having a fever or a temperature. What can it be? will be very grateful for your answer, thank you.