Vaginal secretion (often called vaginal discharge) is the normal fluid made of mucus, cells, and bacteria that comes from the vagina and cervix and helps keep the vagina clean, lubricated, and protected from infections.

What is vaginal secretion?

Vaginal secretion is a mix of fluid, shed vaginal and cervical cells, and bacteria that naturally exits through the vagina each day. This fluid helps maintain a healthy vaginal environment by keeping tissues moist and supporting “good” bacteria that protect against harmful germs.

What is normal?

Normal vaginal secretion:

  • Is usually clear, white, or off‑white.
  • Can be thin and watery or thicker and slightly sticky or milky.
  • Has mild or no odor and does not cause itching, burning, or pain.
  • Amount can range from about half a teaspoon to several milliliters per day, varying by person.

These secretions are slightly acidic (pH roughly 3.5–4.6), which helps control harmful bacteria and yeast.

Why does it change?

The quantity and texture of vaginal secretion often change over time and through the month.

Common reasons:

  • Menstrual cycle phase (often stretchier/egg‑white around ovulation, thicker before a period).
  • Pregnancy, when hormone levels rise and discharge often increases.
  • Hormonal contraception, which can increase or alter cervical mucus.
  • Sexual arousal, which temporarily increases lubrication.

These changes are usually normal as long as there is no strong odor, irritation, or pain.

When it may be a problem

Vaginal secretion can signal an infection or other condition when its characteristics change noticeably.

Warning signs include:

  • Strong, fishy, or foul smell.
  • Yellow, green, gray, or very thick cottage‑cheese‑like discharge.
  • Itching, burning, soreness, pain with urination, or pelvic pain.
  • Bleeding between periods or after sex along with unusual discharge.

Possible causes include yeast infection, bacterial vaginosis, sexually transmitted infections, or other vaginal or cervical conditions.

What to do if you’re unsure

If you notice a new, persistent change in color, smell, thickness, or if you have itching, burning, or pain, it is important to see a health professional for an exam and tests rather than self‑diagnosing. Early evaluation can identify infections or other problems and help you get the right treatment.

Bottom note: Information gathered from public medical references and educational health sites and portrayed here.