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irregular periods

Hi doctors, I want to check if it is normal that my period cycles are usually 34 days apart instead of 28 days? The period length is usually 5 days with no intense cramps nor heavy bleeding. However, around end last year, there was once my period only came after 78 days from the previous period (right after my exams ended)! Is this a sign of PCOS? My weight has been stagnant and I am not overweight. However, I do feel that my hair at my parting is thinning. I’m not sure if I’m being unnecessarily worried. Should I get myself checked? 
Dr. Dinesh G
24 Streak Score Doctors are able to put a streak together by performing an activity everyday
Hi @anonymousgirl , some variations in period cycles are expected during periods of stress during exam periods for example, however they shouldn't be less than 21 days or more than 35 days on a regular basis, and there shouldn't be large variations (>2 weeks) between your longer and shorter cycles. These would be features that require further assessment and potentially investigations to rule-out possible causes such as thyroid disorder or polycystic ovarian syndrome (PCOS).

You may not have anything to worry about based on your cycle and that one-off incident alone, however given the accompanying thinning of hair, you would benefit from further assessment to be assured that there are no underlying reversible causes such as thyroid disorder. I would recommend for your to speak to your parents about this and arrange a review with your doctor for a more detailed assessment. I hope this helps!
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