I'm having yellow discharge everyday. Now 13 weeks of pregnancy. Quit worry but no itching or smell.

If you are worried, then request for vaginal swab when you see doctor. As long as it is not itchy, cheesy, has odour smell then it is okay. But, this can also lead to other factor which is yeast infection, better to be check upon if you are in doubt. Alternatively, have a look at this chart above ⏫

Here you go