I need advice

So bout a week ago I had pinkish discharge that went away that same night i am suppose to start my peroid this week but its never forsure when i will beacuse I have a very irregular period that I can't track right.i have had sore breast light cramping in my lower bck and stomach area but had a neg home pregnancy . I know when I got pregnant with my daughter even being 5 weeks along I has only got a fate postive test I'm not sure if I should wait longer or go ahead and go to the obygn .