I was just going to ask you... "is the pain in your kidney area"?
Glad you found your diagnosis !
It was a kidney infection.
Do you have the money to see a doctor? It seems to have gone on too long. If you've had a fever more than 3 days and you feel like it is getting worse you should see a doctor. I don't think that it is a UTI if your pain is the upper back, unless you have burning while urinating or a change of urine color or consistentcy. Don't let this go on much longer, fever is a sign of infection that your body is trying to fight.