Hello,
There are several reason of missed period (besides
pregnancy) like Ovarian Cyst/ PCOD,
hormonal imbalance, over wt/ extreme loss, mental stress, emotional upset,
eating disorder, thyroid problem etc. Pregnancy is possibly ruled out in this context.
Therefore, I suggest to do a USG lower abdomen, LH/ FSH, Thyroid profile, Blood sugar &
prolactin level etc to rule out underlying pathology.
Then you must consult with your gynecologist and take advice according to test reports.
Control body wt by regular exercise, avoid stress, take healthy diet and sleep properly.