Shop Now New Bras Undies Lingerie Fit Blog Loyalty Program

why do my boobs hurt

Sore boobs are simply part of being a woman, unfortunately. Of course, sore breasts can also be a symptom of breast cancer, but there are numerous other reasons why your boobs hurt. So, don’t go jumping to conclusions!

Here are eight possible reasons why your boobs hurt:

1.  Your bra isn’t the right size.

Wearing the wrong bra size makes your boobs sore or uncomfortable. If the bra is too small, it squeezes your breast tissue. This makes your boobs feel tired and sore to touch when you remove the bra.

If your bra is too big, it can’t provide you with optimal support. Bigger busts will feel sore if a bra isn’t lifting and supporting them properly. Check our list of signs you’re wearing the wrong bra size. If any apply to you, get a bra fitting and buy a new bra.

2.  Your period is coming.

Lots of changes take place in your boobs as you transition through your cycle. Your boobs go from soft and small, to full and firm. If your period is around the corner, it could be the culprit for your sore boobs.

3.  Your boobs don’t get enough support during exercise.

Without an appropriate fitting sports bra, your boobs will bounce around during exercise. This movement puts pressure on your breast ligaments and tissue and can cause soreness. If you suspect your sports bra may not be providing enough support, a bra fitter can help you determine which sports bra is best for you.

4.  You went too hard in your workout.

It’s possible you overdid it in your workout and pulled a muscle. Minimize your upper body workouts for a few days and do plenty of stretching to see if that alleviates the soreness.

Related: How To Find The Right Bra For Your Breast Shape

5.  You’re pregnant.

Sore breasts are one of the earliest signs of pregnancy because of increasing hormone levels. Of course, this is also a symptom of your period, so it can be difficult to tell the difference.

6.  You’re breastfeeding, and something is off.

According to lactation consultant Sandra Yates, breastfeeding shouldn’t be painful, and if it is, there’s usually something wrong. If you’re nursing and experiencing pain, it could be due to an infection, clogged milk duct, mastitis, latch issues, etc. It’s always a good idea to visit your health care provider to get help if experiencing pain with breastfeeding.

7.  You changed your birth control.

A change in birth control could be the reason why your boobs are sore. Birth control affects your hormones, which directly impacts your breasts. Typically, breast soreness resolves after a few weeks of starting a new pill. If not, you’ll want to consult your doctor.

8.  You need to chat with your doctor.

If you can’t pinpoint any other reason for your sore boobs, go ahead and make an appointment with your physician. She or he can discuss other reasons behind your sore boobs or perform a clinical breast exam to check for any abnormalities.

If you are mindful of recent lifestyle changes or activities, you can usually resolve breast soreness yourself within a few days. But never feel hesitant to visit your doctor if you feel like the soreness is prolonged or you can’t determine a reason for the soreness.

Related: Here’s How Your Period Affects Your Boobs

We Highly Recommend

Whether you’re shopping for new everyday bras or lingerie for a special occasion, it’s always a good idea to seek out a second opinion. We know how hard it is to find bras that fit well and feel good, especially when you’re doing it on your own. If you’ve ever felt unsure about your bra size or you just don’t know where to go to find good bras, it’s time to let a bra fitter help.

Many specialty lingerie boutiques offer bra fittings. Their expert bra fitters will take the pain and frustration out of bra shopping and do all the work for you. Even better, their product knowledge can save you time and money. Plus, they know where all of the best bras are hiding.

If you’ve struggled with finding bras in the right size, it’s time to make a change. Visit our specialty store locator to find a store near you and schedule an appointment.

Happy bra shopping!

Shop Now

Published by

Lauren Hamilton

Lauren Hamilton is the founder of, a lifestyle and relationship blog offering relationship advice and encouraging women to be the happiest, most confident version of themselves through positivity and self-love. She's also a freelance writer and communications strategist. Follow her on Instagram or Twitter, and check out some of her accomplishments on her portfolio.

Go Top