Strange discharge at 7 weeks?

This is my first pregnancy so please forgive the TMI question! I'm 7 weeks and the last few days I've had really thick mucus like discharge. The color ranges from white to pale yellow to a light brown. No weird smell or itching so I don't think it's an infection. The clumps are usually twice the size as the one in the photo!

Is this normal or should I be concerned?