Yellow/white cm

Amanda
Has anyone experienced this? I'm 7w1d and have had whitish/yellowish clumpy and sometimes watery cm. I've read mixed things, that it's normal or can be an early sign of a miscarriage. I don't have cramps or bleeding. I am on progesterone suppositories. My first ultrasound appointment is tomorrow but now I'm a nervous wreck!!! Has this happened to anyone and been okay?