White discharge

Is it normal to have a lot of white discharge at 22 weeks 2 days pregnant?? Everytime I wipe it fills the toilet paper. I’ve been taking a lot of baths lately so I feel like a UTI is starting or something? It doesn’t smell just a lot. Not clumpy or anything. I have a doctors appointment Thursday but just wondering what you guys think. It also burns when I wipe down there. I’ve been tested for STDS and I’m clean.