Yes, but it is rare. You would need to see doctors, for this to be confirmed.
Yes, this is rare but possible. About 1% of women will go through menopause before the ripen age, which is 45-55. However, Menopause occuring before age 40 is considered to be premature menopause or POF (premature ovarian failure) which can be caused by various health conditions. Also certain treatments like chemotherapy can also bring this on. What makes you think you are going through menopause? What are you symptoms?
Yes, it is possible, but it would take a doctor's diagnosis to confirm that is really what is happening. Other things can make periods absent.