Excess discharge ?

I have fairly consistent discharge and I’m normal down there . But this week for some reason Ive had so much discharge , I literally have been changing my under wear so much ! It’s white not lumpy or anything but just white . I’m getting my period next week, so could it be why ?

I’ve also been feeling pain when I sit , like on my vagina I spend slot of time sitting lately bc school started and I commute over 2 hours to get there every day .

I don’t think it’s a yeast infection

Has anyone else experienced this ?

* also I am going to my doctor but I wanted to know if anyone else experienced this *