the only thing that is predictable about a young woman's menstrual cycle is it's unpredictability. there are so many things that can cause your menses to temporarily stop. stress diet illness hormonal fluctuations etc. i would suggest that you see a gynecologist (women's health specialist). don't worry they are unlikely to require a pelvic exam but the doctor can help determine a specific reason and may give you medication that can restart your cycle. if you are sexually active then yes this is a symptom of pregnancy. it is possible that you may in fact give birth to our lord & savior jesus christ.
im 16 and a virgin had a normal period for 3 years. i havent had my period for four months is this normal?