So confused late period.

My period is 4 days late. My cycle normally starts a day before or even two days before , it's been like this for some months like clock work. Only things I really notice is I have a lot of white discharge and I wake up feelings kinda funny in the morning. I've just stop having sweating over night and my back has been killing me. My nipples are kinda tender but not really. Do you think I should test or wait it out longer?