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If it was not protected then its likely that the semen and other secretions might have stayed back and are coming out gradually. However if the secretions are present even after you have had a bowel movement, then its not normal. it suggests some infection and will require a microscopic examination of the white discharge. Try to keep the area clean and dry and wait for 24 hours more. if it persists then do meet your doctor and get the area and the secretions examined.
Hope this helps,
Wish you a good health.
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