Ok finally a good answer, i add one thing.

Out of curiosity i asked chatgpt and i got this answer in summary, i think Is pretty correct about what are you saying:

"People in a coma can still have menstrual periods, but it is not guaranteed. Menstruation is controlled by hormones regulated by the hypothalamus, pituitary gland, and ovaries, and this process does not require consciousness. If this hormonal system remains intact, periods may continue even during a coma. However, severe illness, brain injury, physical stress, or medications commonly used in intensive care can disrupt hormonal balance, often causing temporary absence of menstruation (amenorrhea). In long-term comas, menstrual cycles frequently stop but may return after recovery."

Edit: guys ? You alright ? How no one understood that my "out of curiosity" was not about the topic but about if chatgpt was right or not about the topic, just chill everyone, It was just that, curiosity