6 days late

So I'm 6 days late on my period and can't tell if I am having symptoms or not. I'm getting a lot of discharge and slightly prickly tender breasts and keep getting hot flushes. But I keep thinking af may be making an appearance as I am getting bad cramping along with watery discharge but when I go to the loo... Nothing! I will do a test but I feel like I should hold off for a day or two. Help!