Why is My Period So Light?

Pregnancy and Other Reasons for a Lighter Than Normal Period

Pregnancy
A light period can be a sign of pregnancy. Spotting in early pregnancy is often caused by implantation bleeding, which may just seem like a light period.

• Implantation bleeding occurs a few days before your period or around the same time it would normally appear.
• It can vary in shade from light pinkish-red to a light rust color.
• It may be accompanied by cramps.
• It does not always occur or may not be noticeable.

Breastfeeding
People who are nursing have high levels of prolactin in their bodies, which can affect the menstrual cycle. Your periods may be lighter or shorter while nursing, but they typically return to normal once you’ve stopped.

Weight Loss or Gain
If you’ve suddenly gained or lost a lot of weight, you may see a change in your menstrual cycle. If you’re underweight, the loss in fat can cause you to stop ovulating or releasing an egg every month.

Stress
Emotional stress, such as the loss of a loved one, or major life stressors in work or your home life, can affect hormones that regulate your menstrual cycle, causing your period to be lighter, irregular, or stop completely.

Birth Control
Hormonal birth control can also affect your period. For example, taking hormonal birth control pills or using a hormonal IUD can cause your period to be lighter or stop.

Medical Conditions
Certain medical conditions, such as thyroid disorders, polycystic ovary syndrome (PCOS), and Asherman’s syndrome, can lead to lighter periods. Your healthcare provider can help you determine if any of these conditions are causing your symptoms.

Pain Medication
Taking nonsteroidal anti-inflammatory drugs like Advil (ibuprofen) can reduce your period flow by slowing down the production of prostaglandin, a hormone that causes contractions in the uterus.

What Is Considered a Light Period Flow?
The amount of blood lost during a period can vary from person to person. On average, there are about 2-3 tablespoons of blood lost during a period.

When to See a Healthcare Provider
If your periods are consistently light, it’s a good idea to see a healthcare provider to rule out any underlying medical conditions. You should also see a provider if you have symptoms like severe cramps, heavy bleeding, or abnormal bleeding.

Summary
Your period can be lighter than normal due to natural reasons, such as breastfeeding, weight gain, weight loss, stress, or perimenopause. If your period seems off and you’re not sure why, let a healthcare provider know. Tracking your period symptoms can help you notice any unusual changes.