The average menstrual cycle length is 28 days, but it can vary from 21-35 days. A 21 day, or a 35 day cycle isn’t a bad thing, but even shorter, or longer than that can signal a problem. Have a quick visit with your doctor.
But, why is your menstrual cycle getting shorter and shorter? For example, maybe you have a regular 28-day cycle for years, but then you suddenly start to have 25-day cycles? Let’s find out!
My Menstrual Cycle is Getting Shorter! Why?
There are a number of reasons for a menstrual cycles getting shorter. Some of them include the following.
Have you recently started, or switched birth control? This can have an impact on menstrual cycle length. Check with your doctor for more details about what you can expect on the specific pill you’re using.
Certain conditions can affect the hormones that regulate menstruation. For example, thyroid problems.
It’s normal for perimenopausal periods to be quite irregular due to changing hormones. Really, just about anything can happen during this time before menopause! Shorter periods, longer periods, heavier or lighter, spotting, or a change in cycle length.
Infections and Diseases
There are a number of different medical conditions that can have an affect on menstrual cycle length. Check with your doctor if you’re starting to have a shorter menstrual cycle to rule out some of the more serious ones.
When you go in for a check-up, let your doctor know if you’re on any medication. Some of them can impact cycle length. For example, antidepressants. This is particularly true if you’ve just started a new medication and your body may be adapting to it.
Eating disorders can cause periods to become more irregular.
Cycling Up with Someone Else
Are you hanging around a female friend, housemate or daughter a lot? There is the tendency for cycles to match up, which may mean that your cycle is getting shorter to adapt to the person you’re spending lots of time with.
Learn More about Menstrual Cycles
I’m Not Sure How Long My Cycle Is!
Menstrual cycle getting shorter: I have no idea! Is it?
Do you only have a vague idea of how long your cycle is, or how many days there are between periods? You’re not alone. Most people don’t know.
A menstrual cycle is measured from the first day of bleeding until the first day of bleeding next month.
A super simple way to track your cycle to find out if it’s getting shorter is to use your phone calendar. When you start your period, mark it with an icon in your phone. Then, keep doing it for a few months and you’ll know precisely how long your menstrual cycle is.
Alternatively, consider using a phone app to track your period. It’s super handy, and kind of fun too.
What Should I do about My Shorter Menstrual Cycle?
Is there anything you can do about a menstrual cycle that is getting shorter and shorter? Maybe.
It really depends on the underlying condition that is causing it. It’s impossible to give any sort of specific advice about this over the Internet, so please check with your doctor.
Remember, you should see your doctor any time there is something not quite right about your periods, or if it suddenly starts to change. There could be a serious problem that is responsible for the changes.
My Period is Getting Shorter!
Maybe you normally bleed for 5 days, but find that it’s now 3 or 4 days. Is this a problem? It may seem like good news!
There are actually some serious, underlying reasons why this might be happening and we recommend checking with your doctor about it.
More details here: My Period is Shorter than Usual.
I Don’t Have Periods: What’s Wrong?
Maybe instead of your menstrual cycle getting shorter, you don’t have periods at all. If you’re older than 15, but have never gotten your period, you’re considered to have Primary Amenorrhea.
You’re considered to have this condition as well if you’ve started your period, but have now missed three in a row. This is called Secondary Amenorrhea.
There are a number of reasons for this condition, including pregnancy.
Learn more here: Amenorrhea, Causes, Treatments and Risk Factors.
Menstrual Cycle Getting Shorter: Have your Say!
Comments or questions about a shorter menstrual cycle? Leave a comment below and share your thoughts with us.