I have had a history of UTI's so I'm very aware of the symptoms. I just recently got over one not too long ago, but not with antibiotics as I do not have health insurance to get to a doctor. I am aware that without treating a UTI with an antibiotic, it can lead to kidney infections. I am not aware of those symptoms at all. Last night it started. I got this very severe and intense pain in my lower back. It hurts to breathe, sit, stand, lay down, everything! I was awoken during the night with the signs of a UTI (trouble urinating, overwhelming sensation to go) but when I woke up, all of the symptoms were gone. At around 8pm tonight, the severe lower back pain came back and it's even worse! Should I be concerned?