Bladder infection?

Paisley

I have a doctors appointment next week Friday and I plan on asking him then. But I’m having really bad bladder pain. I also have a sharp pinching feeling when I sit down. And I just feel very uncomfortable. Not sure if I should wait until my appointment to talk to my doctor. Or should I try to go to walk in and get checked out immediately? Meanwhile I’ve been drinking tons of water and drinking cranberry juice.