It is possible that a woman’s labia appear swollen on the eleventh day after ovulation, but it is also possible that it is not pregnancy, but vulvovaginal pseudomyxomatosis or allergies and other causes. 1. Pregnancy: After the fertilized egg is deposited, estrogen and progesterone begin to rise in the body at this time, causing water and sodium retention, which leads to swelling of the labia. However, due to the 11th day of ovulation when estrogen, progesterone and other elevated amplitude is small, so at this time the possibility of labia swelling is small, so you can not judge from the labia swelling alone to determine whether or not pregnancy. 2. Vulvovaginal pseudomycosis: caused by Candida infection, the patient can be because the labia are attacked and stimulated by Candida for a long period of time, which leads to infection and swelling of the labia. 3. Allergy: when the patient’s labia come into contact with allergy-prone substances, such as allergen-containing underwear, etc., it is also possible that the increase in histamine in the labia area may lead to capillary dilation, thus causing the labia to swell. Once a woman feels that her labia are swollen on the eleventh day after ovulation, she may be pregnant or it may be due to other reasons, and she cannot judge whether she is pregnant from this symptom alone.