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1. Delayed Periods. â A brown vaginal discharge instead of a period usually occurs due to late periods. â Sometimes if the lining is not eliminated, the residual can remain within the uterus for almost a month. â In this condition, a womanâs body expels an old uterine lining.
Menstruation is the process of rejection and discharge of previously proliferated endometrium through the vagina. Brown mucous discharge instead of period can be associated with perimenopause, hormonal disruption, stress, etc. Another explanation for having brown spotting instead of period is implantation bleeding.