Why does my export add an outer glow.

I am very new to Indesign. I just made my first flyer via, export as Adobe Pdf (print). But when I review the pdf, all of my text has an outer glow to them. I never added an outer glow to my text. Only to a few graphics. 
This doesn't happen when I export it as jpeg. 
Does anyone know why this happends and how to solve is?
Before export:

After Export: