Someone please respond!

Ember • #ProudMom of a Preemie 🤱🏼Calvin Brady 1-18-18 🤱🏼 Rainbow Baby 👫+ 👉🏻👌🏼= 🌈👶🏼 Here for emotional support & to provide it for others
Okay so I'm 4 days late, I was supposed to start the 18th (Sunday). I was wondering if I need to test? Is it too soon? My fiancé and I have been trying to conceive for almost 2 years. We had a miscarriage in October of 2016. There's been times when I've been late before and I've tested and got negatives but I don't believe I've ever been this late before. This might be TMI but I also have had white creamy discharge.