Typically, a thick milky discharge is a sign of ovulation. However, each woman's body is different from the next, and it could be a symptom of pregnancy for that individual. It could just be hormones, or possibly a yeast infection, yet it is best to see a specialist to ascertain the cause of the discharge. An infection could be the cause, as the white liquid would be akin to the pus found in outer-body infected areas. If the discharge is pregnancy-related, it could be accompanied by mild headaches and cramping, much akin to the symptoms of a period. The discharge itself is known as leukorrhea, the odourless or mild-smelling milky discharge that you may have noticed in your underwear before you were pregnant. Leukorrhea is a normal accompaniment to early signs of pregnancy, so it best to get it confirmed by a doctor. The leukorrhea is formed due to the increased levels of oestrogen in the body, leading to a higher volume production, and greater blood flow to the vaginal area. This discharge is made up of secretions from the cervix and vagina, old cells from the walls of the vagina, and normal bacterial from the vagina. If the discharge does indeed signal pregnancy, it will probably increase as you approach labour, although it's likely to look somewhat different from the flow you've become accustomed to as you approach labour.
