Master in Sexology and Psychosexual Counseling. For More Info WhatsApp- 9604715783/9359863878. Excitement: Women: vaginal lubrication within 10 to 30 seconds. The lubrication occurs with equal promptness whether the stimulus is direct to genital region or to her breasts or an erotic train of thoughts. Source of vaginal lubrication is the sweating reaction occurring on the walls of vagina. It seems out of congested blood vessels. Expansion of inner two third of vagina. Elevation of cervix and uterine body. Thickening of vaginal walls and of the labia. Swelling of the Clitoris. Enlargement of the breasts, swelling of the areolas and erection of the nipples.