Is it possible to have 10 days delayed period because of stress, 4-5 hours sleep per day, passed illness with high fever and using a lotof paracetamol?

Maybe.: In a woman with regular periods, some causes of a late period include: excessive weight loss or weight gain, increased exercising, emotional stress, having an illness, traveling, medicines (like birth control pills), hormonal imbalances, etc… Seeing a doctor is a good idea if symptoms are persistent, recurring, or worrisome. Pregnancy is the common cause of a missed period, if sexually active.