Wierd discharge.

I have been having some wierd discharge for a few weeks now. It's been a greenish color and sometimes has a smell. I figured it was an infection or something. I went to the DR they ran every test and it says everything is normal. I'm SO confused and it is killing the sexual side of my relationship. I'm looking into another DR for a second opinion but does anyone have any advice or any idea what it could be?? Or anyone know what it looks like? 😫😕