Clear Discharge Before Menstruation: What to Know - Obstetrics and Gynecology

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Premenstrual discharge


Is it normal to have clear discharge before menstruation? This month, it suddenly increased in amount.
Previously, it had a blood-tinged color and lasted for four days before becoming completely clear.
My period is expected to start on September 27 or 28.

Xiao Lin, 30~39 year old female. Ask Date: 2015/09/25

Dr. Lü Lizheng reply Obstetrics and Gynecology


The transparent discharge may be a result of increased hormone levels.
Certain foods or medications can elevate hormone levels, and disruptions in daily routines may also lead to elevated hormones, potentially causing irregular menstruation, or it could be due to unknown reasons.
Sincerely, Dr.
Li-Cheng Lu, Taoyuan Hospital.

Reply Date: 2015/09/25

More Info


Before menstruation, it is common for women to experience changes in vaginal discharge due to hormonal fluctuations. The clear discharge you are noticing is likely a result of increased estrogen levels leading up to your menstrual cycle. This type of discharge is typically normal and can vary in consistency and amount from month to month.

In the menstrual cycle, the discharge can change significantly. Early in the cycle, after menstruation, the discharge may be minimal and somewhat dry. As ovulation approaches, estrogen levels rise, which can lead to an increase in cervical mucus. This mucus is often clear, stretchy, and resembles raw egg whites, which is a sign of fertility. After ovulation, if pregnancy does not occur, progesterone levels rise, and the discharge may become thicker or creamier before menstruation begins.

The sudden increase in clear discharge you are experiencing could be attributed to several factors:
1. Hormonal Changes: As mentioned, hormonal fluctuations are the primary cause of changes in discharge. If your cycle is regular, the increase in clear discharge could indicate that you are approaching ovulation or that your body is preparing for menstruation.

2. Ovulation: If you are nearing ovulation, you may notice an increase in clear, stretchy discharge. This is a normal part of the menstrual cycle and indicates that your body is preparing for potential fertilization.

3. Hydration and Diet: Increased hydration and certain dietary changes can also affect the consistency and amount of vaginal discharge. A well-hydrated body may produce more cervical mucus.

4. Stress and Lifestyle Changes: Stress, changes in physical activity, or alterations in your daily routine can also impact your hormonal balance and, consequently, your discharge.

5. Infections or Medical Conditions: While clear discharge is usually normal, if you experience any unusual symptoms such as a strong odor, itching, burning, or a change in color (especially if it becomes yellow, green, or brown), it may indicate an infection or other medical condition that requires attention.

Regarding your previous discharge being blood-tinged, this could have been a sign of ovulation spotting or could indicate that your period is approaching. It is not uncommon for women to experience light spotting or changes in discharge leading up to their menstrual cycle.

If your menstrual cycle is expected around September 27-28 and you notice these changes in discharge, it is likely part of your normal cycle. However, if you have concerns about the amount or characteristics of your discharge, or if you experience any discomfort, it is advisable to consult with a healthcare provider. They can provide a thorough evaluation and ensure that everything is functioning normally.

In summary, clear discharge before menstruation is typically normal and can vary from cycle to cycle. It is a sign of hormonal changes and may indicate that your body is preparing for menstruation or ovulation. If you have any concerns or experience unusual symptoms, seeking medical advice is always a good idea.

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