You need to go to the doctor asap! Sounds like a urinary tract infection. With out treatment this can get very serious! Since it's the weekend I would go ahead and go to the ER. Not trying to scare you at all but get it treated now before it it gets really serious! Hope you feel better soon.
You have a urinary tract infection, no time will cure this, you must go to the doctor and get antibiotics. With they in your system you will be good as new in no time.