Vaginal discharge is completely normal, and most people produce less than one teaspoon per day. But the amount fluctuates, sometimes dramatically, depending on where you are in your menstrual cycle, whether you’re pregnant, what birth control you use, and whether an infection or irritant is involved. In most cases, an increase in discharge is your body doing exactly what it’s supposed to do.
Your Menstrual Cycle Changes Discharge Volume
The most common reason for a noticeable increase in discharge is simply your hormonal cycle. Estrogen levels rise and fall throughout the month, and your cervix responds by producing more or less mucus. Before ovulation, discharge tends to be thick, white, and relatively minimal. As ovulation approaches, it increases significantly and becomes wet, stretchy, and slippery, often compared to the look and feel of raw egg whites. This is your most fertile window, and the extra mucus helps sperm travel more easily.
After ovulation, discharge drops back down and becomes thick and dry again. So if you notice a few days each month where discharge seems heavier than usual, that’s almost certainly your body’s ovulation pattern. Tracking it over two or three cycles can help you see the rhythm.
Pregnancy and Hormonal Birth Control
Increased discharge is one of the earliest signs of pregnancy. Known medically as leukorrhea, this pregnancy-related discharge is thin, clear or milky white, and has a mild odor. It increases progressively throughout pregnancy as blood flow to the cervix rises and hormonal shifts ramp up mucus production. This extra discharge serves a protective function, helping shield the cervix from infection.
Hormonal contraceptives can have a similar effect. Hormonal IUDs in particular tend to thicken cervical mucus (that’s part of how they prevent pregnancy), and all that extra mucus can translate to more noticeable discharge. Birth control pills and the patch can also cause watery discharge due to hormonal changes in the cervix and vagina, even though they suppress ovulation.
Irritants That Trigger Extra Discharge
Your vagina reacts to chemical irritants by producing more discharge as a flushing mechanism. Common culprits include scented laundry detergent, fabric softener, perfumed toilet paper, bubble bath, feminine hygiene sprays, and deodorant-containing pads or tampons. Latex condoms and spermicidal gels can also be irritating for some people. Douching is another frequent offender: the chemicals disrupt the vagina’s natural bacterial balance, which can lead to both increased discharge and a higher risk of infection.
If your discharge increased around the time you switched a product, that’s worth noting. Eliminating the irritant usually resolves the issue within a few days.
Bacterial Vaginosis
Bacterial vaginosis (BV) is the most common vaginal infection in people of reproductive age, and its hallmark is a change in discharge. BV produces a thin, uniform, gray-white to yellow discharge that often comes with a strong fishy odor, especially after sex. The odor happens because the normal balance of vaginal bacteria has shifted, allowing certain organisms to overgrow.
A healthy vagina maintains a pH between 4.0 and 4.5, which is moderately acidic. With BV, the pH rises above 4.5, creating an environment where the wrong bacteria thrive. BV isn’t a sexually transmitted infection, though sexual activity can increase risk. It’s treated with antibiotics, and symptoms typically clear within a week of starting treatment.
Yeast Infections
Yeast infections produce a thick, white discharge that looks like cottage cheese. Unlike BV, yeast infections usually have no noticeable odor or only a faint bread-like smell. The more prominent symptoms are intense itching, burning, and irritation around the vulva. The discharge itself may also be watery in some cases.
Yeast infections happen when a fungus that normally lives in the vagina in small amounts grows out of control. Antibiotics, high blood sugar, a weakened immune system, and hormonal changes (including pregnancy) all raise the risk. Over-the-counter antifungal treatments work for most uncomplicated yeast infections, though recurring infections may need a longer course of treatment.
Sexually Transmitted Infections
Trichomoniasis is the STI most closely associated with abnormal discharge. It can produce a gray-green discharge that may smell bad, and it often raises vaginal pH to 5.0 or higher, sometimes reaching 6.5. Not everyone with trichomoniasis has obvious symptoms, though, so increased or unusual discharge paired with a new sexual partner is worth getting tested for.
Chlamydia and gonorrhea can also cause abnormal discharge, though they do so by inflaming the cervix rather than changing the vaginal environment directly. The discharge from cervical infections may look different from typical vaginal discharge: it can be yellow or slightly green and may come with pelvic pain or bleeding between periods. Both infections are easily treated but can cause serious complications if left alone, including fertility problems.
How to Tell Normal From Abnormal
Normal discharge is clear, white, or slightly off-white. It may be thin or slightly sticky, and it either has no smell or a mild one. The volume shifts throughout your cycle, and that’s expected. What matters more than amount is whether the discharge has changed in color, texture, or smell compared to your usual baseline.
Signs that something else is going on include:
- A strong fishy odor, especially after sex (suggests BV or trichomoniasis)
- Thick, cottage cheese texture with itching (suggests a yeast infection)
- Green or gray-green color (suggests trichomoniasis or another STI)
- Pelvic pain, fever, or bleeding between periods alongside discharge changes (suggests a cervical or pelvic infection that needs prompt treatment)
If your discharge has simply increased but still looks and smells the way it always does, the explanation is almost certainly hormonal, whether from your cycle, pregnancy, or contraception. If the character of the discharge has changed, especially with itching, odor, or pain, that points toward an infection or irritant that’s worth identifying.