What are the symptoms of a bladder infection and can it get worse over time?

It does sound like you have a bladder infection. The infection will NOT go away on its own. There are no home remedies. The ONLY way to cure the infection is to take antibiotics prescribed by a doctor. Bladder infections are usually easy to treat with oral antibiotics, but left untreated, the infection will cause permanent kidney damage and other serious problems, and will require hospitalization to treat. You need to see a doctor ASAP. DON'T WAIT.