During pregnancy, it is common for women to experience changes in their breasts, including the production of colostrum, a thick yellowish fluid that will later become breast milk. However, if you are only 6 weeks pregnant and experiencing a white discharge from your nipple, it is more likely to be due to hormonal changes rather than colostrum production. This is known as galactorrhea and can occur due to an increase in prolactin levels. While galactorrhea itself is not usually a cause for concern, it is always best to consult with your healthcare provider to rule out any underlying issues. They may perform further tests or examinations to ensure everything is progressing normally in your pregnancy.