I'm not sure if I have one or not. Recently it's been burning when I pee, I have a fever, feeling run down, and a lot of pressure in my lower abdomen. My mom thinks it's a bladder infection, but I've never had one before so I'm not so sure.

That's what it sounds like to me. I get 1-2 a year, bladder or urinary tract infections. Go to the doctor and get an antibiotic, it won't go away on its own! I have one right now as a matter of fact, went to the doctor yesterday for it.

I know exactly how you must be feeling as i started getting UTI's around four years ago.See your doctor ASAP,as these usually need a course of antibiotics to clear them up.There are many reasons why we get water infections,sometimes,they just happen.Good luck to you and i hope it is the first and last you get.