help me I'm lost

by glow I'm supposed to start my period 13 days I've been having sharp pains in lower stomach and feeling nauseous I usury don't have discharge in my underwear but yesterday I had watery discharge in my underwear and today I have creamy milk white discharge in my underwear I'm so confused to what is going on with me it's not all that normal for me anyone else experience this or have any gesses or clue to what is going on with me