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Period Didn’t Come This Month : What Are the Possible Reasons?

4 months ago

My period hasn't arrived this month. The pregnancy test is negative. What are the other reasons a period can just not show up? This hasn't happened to me before and I'm not sure whether to wait or see a doctor.

Asked By Suman | Female | Age 22

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4 months ago

Answers (1)

Pristyn Care Team

Simplifying Healthcare

Jan 17 2026

Missing a period with a negative pregnancy test is more common than most people realize. Several conditions can suppress ovulation entirely.

Most frequent causes:

PCOS: Leading cause of missed periods. Hormonal imbalance prevents regular ovulation. Other signs include acne, facial hair, and weight gain around the abdomen.

Thyroid disorders: Both underactive and overactive thyroid disrupt cycles. A simple TSH blood test checks for this.

Stress: High cortisol suppresses the hypothalamus, halting the hormonal cascade that triggers your cycle.

Low body weight or sudden weight loss: Can stop periods entirely.

Excessive exercise: Common in athletes.

Perimenopause: In women over 40, cycles become unpredictable.

 

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