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Can menstrual cycle durations change when sisters are not physically present around each other?

I am 17.I had stopped being at home most of the time and my sisters period started at the same time. My should of started after theirs has stopped. Could it be possible that during a certain amount of ansences without being around my sisters make my period about 3 or 4 days late; or better yet later than that? I ask becuz my periods r generally on time but this time not.
Asked On : Sun, 5 Aug 2012
Answers:  1 Views:  30
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OBGYN 's  Response
Hello dear,I understand your concern.

In my opinion the physical presence or absence of your sisters will not affect the periods.

But there are conditions which can affect your periods and cause delay in a regularly menstruating woman by causing hormonal imbalance like :-
1)Physical or mental stress.
2)Any infection.

If you are sexually active then the pregnancy is ruled out by doing a urine pregnancy test.

As per your history you are not sexually active so there is no chance for pregnancy.

Usually the duration of menstrual cycle is 21-35 days.So check for the number of days and wait for spontaneous onset of periods.

Avoid stress if any and take healthy nutritional diet.

Check for your periods for 2-3 months.In case if irregularity continues then other causes like thyroid abnormalities,ovarian abnormalities like polycystic ovarian disease(PCOD),overweight or obesity,stress etc.

Nothing to worry as such.Relax.

Best regards....Dr.Srilatha

Answered: Fri, 1 Apr 2016
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