You might experience increased vaginal secretion due to hormonal changes during pregnancy. It is a good idea to shower on a daily basis to keep your genitals clean and choose undergarments made from absorbent, cotton material; avoid wearing undergarment and stockings made from nylon. Go to your obstetrics & gynecology doctor when you notice weird odor from your vaginal secretion/color change in your vaginal secretion or when you experience irritation/discomfort at the posterior section of your genitals.