A.C.
My daughter was diagnosed with a UTI not long after she was born(less than a month old). She was not gaining the weight after birth the way she should have been, so the dr's were worried and did all kinds of test on her and finally discovered that the UTI was the cause. It can be serious if it is not detected, but as long as you have it under control and are administering the antibiotics properly, she should be just fine. They may even want to do further testing to make sure that her bowels are functioning properly. They did an ultrasound and a die test on my daughter's organs to make sure that everything was flowing properly. Im not sure if they would administer those tests on your daughter being that she is older.