I've had this for weeks now! It can be this colour during pregnancy, I've read it multiple places that it's a normal colour. As long as there is no burning or itching we should be fine! The joys of hormones.
In the video for weeks 13-16 it says to expect this symptom so maybe you are a little early with it?
I would go to the doctor. I think any change in discharge in color or smell should be seen by the doctor... Just in case, you want to make sure there is no underlying infection.