What Causes Irregular Periods?

What Causes Irregular Periods?

Is your time of the month coming? If you use a period tracker, you probably know the exact day that your period is coming, right? Hopefully! Although we hope our period comes each month like clockwork, there’s a chance that it won’t.


Irregular periods are more common than you think and there are tons of different reasons why this could happen. If you’re tired of your period popping up on you, let’s talk about some of the reasons why you might be experiencing irregular periods.


While all women are different, there are “averages” when it comes to menstrual and period length. For menstrual length, the time frame is usually considered to be 28 days, but for many women, this would range somewhere between 21 days to as many as 35 days. Even period length varies from women to women. While the average is around five days, women can experience bleeding for as little as three days to as many as seven.


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Averages vary from women to women, but for each woman, their body should eventually even out and run systematically. Unfortunately, this isn’t always the case. There are tons of different factors that cause women to experience irregular periods. Instead of wondering why your period hasn’t arrived or arrived too soon, check out our list to see why you might be experiencing irregular periods.




While it might seem like something you are unable to control, stress definitely affects your period. Since it plays a direct role with your hormones, stress usually causes your late or even missed periods.




Many women use birth control as a means to stop their period or regulate how often it comes. When you first get on birth control, it stops your period from coming monthly. This would be the initial reason why you might be experiencing irregular periods. Once you choose to go off of birth control, this would also cause you to have irregular periods. During this time, your body is trying to regulate to a normal cycle which will cause your first few periods to show up on an impromptu schedule.




Your regular exercise routine won’t stop you from getting your period, but over-exercising can! The reason this happens is that an increase in your exercise routine can cause an increase in your metabolism. In turn, this can affect your menstrual cycle and cause your period to occur late.




One big reason why many women experience irregular periods is if they’ve just come off of breastfeeding. When women get pregnant, their period stops. This is because the body is getting ready to breastfeed and ovulation and breastfeeding cannot occur at the same time.


The hormone, prolactin, is responsible for producing breastmilk. While prolactin works to start breastmilk production, it actually stops ovulation. Since this tries to normalize once you are done breastfeeding, this causes irregular periods.


Irregular periods can be a terrifying thing, especially when you don’t know the cause. While these are some of the primary reasons why you could be experiencing irregular periods, there’s an endless list of possibilities. Instead of living in doubt, seek the knowledge of your gynecologist. They are literally in place to help you with all your vaginal problems so don’t be afraid to reach out to them!

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