Perhaps it's a misspelling of "menses", which is the menstrual flow, also called a period, or catamenia.
after the mences. day betwen 14 to 19.............
If menstruation has been missed for several months, it may eventually return naturally, but this depends on the underlying cause of the missed periods. Factors such as stress, significant weight changes, hormonal imbalances, and medical conditions can affect menstrual cycles. It's important to consult a healthcare professional to determine the cause and address any potential health issues. Regular monitoring and medical advice can help restore menstrual health.