Hi Welcome to HEALTHCARE MAGIC..
I have gone through your query and can understand your concern.
Irregular periods in 23 year old women can be due to many reasons
1. Eating disorders, like overeating can contribute to irregular period.
2.
Excessive weight gain or
weight loss, extreme thinness and obesity both cause your menstrual cycle to become irregular or even to disappear
3 Stress or emotional problems like
depression can lead to irregular periods by interfering with hormones
4.Hormonal problems such as thyroid malfunctions
5. Over-exercising: If you're an athlete and train very hard, you may stop menstruating because your body wants to survive and save energy and
menstruation requires energy
6. Problems with the pelvic organs such as poly cystic ovarian syndrome
Visit a gynaecologist, she would diagnose you and treat accordingly
Hope your query is solved
get well soon