Hello dear
Understand your concern
You should confirm the pregnancy by Blood HCG or by USG.
Causes of delayed period may be
High level of stress, Change in dietary habits, Late ovulation, Excessive weight loss/gain, Drugs: Birth control pills, thyroid medication, Excessive tea and caffeine,
Thyroid disorder, Hormonal imbalance, PCOS, dysfunctional uterine bleeding
Do regular walking and exercise, Eat healthy diet, Avoid stress
Also note that
Menstruation required co ordinate action of various hormone that secreted by ovary (estrogen and
progesterone) and brain (FSH and LH).
If any above hormone is decreased or increased there is imbalance in menstruation.
So please do full hormonal profile : Estrogen, progestron, LH, FSH, HCG and thyroid hormone.
That help to diagnose hormonal imbalance.
Endometrial biopsy, USG,
ovarian follicle study.
After confirmation you can take treatment according So please go ahead.
Hope this may help you
All the best.
Stay healthy.