When you wake up in the morning, if you have more vaginal discharge like water, it may be caused by pregnancy. This is mainly because the increase of estrogen and progesterone after pregnancy will increase the secretion from the cervix and vagina, so the secretion is relatively more and thinner, but it is not like water, it is milky white, which is normal. This may also be the case during ovulation, when the discharge is more, often similar to egg white and is particularly well stretched. There is also an increase in secretions before menstruation, mainly due to increased secretions from the endometrial glands. If pregnancy, ovulation or premenstruation are excluded and vaginal discharge like water occurs, it must be taken seriously and it is recommended to go to the hospital as soon as possible to rule out the possibility of tubal cancer.