Sunflowers, sunshine, lemonade… there are lots of yellow things to love, but some are just baffling. Like Spongebob or a random yellow bruise on your breast. Weird, right?

We’ll explain what’s up and why you probably don’t need to worry. (About the bruise, of course. No one can explain Spongebob.)

For starters, have you ever wondered why bruises go through psychedelic color transformations?

A bruise forms when a hard blow to soft tissue breaks tiny blood vessels under the skin. The visible bruise can appear well after you suffer a bump so you may not actually remember how it happened.

The good news is yellow is a sign that the bruise is healing up properly. But why would you have a bruise on your breast at all? Besides obvious causes like an injury or rough play, the following things can also cause boob damage.

Yee-ouch! Sometimes breastfeeding is a pain

For some women, breastfeeding is rough, back-breaking, boob-smashing work. As you and baby figure out the best angle of attack, you might suffer a few bruises.

Sure, older babies can get chompy and grabby, but even the tiniest of wee babes can mangle your breasts while you both figure out what works for you. The most likely cause of breastfeeding pain is a poor latch. Your entire areola should be in the baby’s mouth, not just your nipple.

Definitely don’t take it personally if you’re feeling a little black and blue from feeding your baby. Check in with a lactation consultant to help you troubleshoot and find a comfortable fit.

Going under the knife? Bruising is inevitable

Have you decided to give the girls a little lift? Maybe you’re downsizing? Maybe you’re going through the frightening experience of having a biopsy after a sketchy mammogram or a mastectomy to treat breast cancer.

Whatever the reason, surgery is traumatic to tissues and will cause bruising. Follow up with your surgeon to be sure you’re healing well and that your bruises are fading as expected.

So your mind jumped to the Big “C”

Inflammatory breast cancer (IBC) is rare — making up only about 1 percent of all breast cancer cases in the United States — but it’s worth mentioning as a possible cause for changes in breast appearance.

Early signs of IBC are redness and swelling and a heavy feeling in the breast. IBC can progress very quickly so it’s important to notice changes.

Bruises are usually easily explained and are only a minor source of discomfort, fading within a few weeks. If you have a feeling your bruise is tied to something more serious, maybe it’s time for a professional opinion.

It’s also important to contact a doctor if you experience the symptoms of IBC listed above.

If your breast pain is related to breastfeeding, ask your pediatrician or obstetrician about seeing a lactation consultant.

Remember this mnemonic device for treating minor bruises when skin (and bones!) aren’t broken: R.I.C.E.

  • Rest. Give your tender boobs a break so the healing can begin.
  • Ice. Applying an ice pack for 10 to 20 minutes at a time will reduce inflammation.
  • Compress. Try a bra or elastic bandage if it makes the bruised area feel more comfortable.
  • Elevate. Your breasts are naturally pretty elevated, but maybe avoid headstands?

You may also want to try an over-the-counter (OTC) pain reliever, but remember medications like aspirin, ibuprofen, and naproxen can reduce your blood-clotting powers.

There are many causes for easy bruising, and some of them deserve a closer look by a doctor. Here are a few:

  • some medications (non-steroidal anti-inflammatories — aka NSAIDs — anticoagulants, and antiplatelet agents)
  • vitamin C and vitamin K deficiency
  • alcohol use and liver cirrhosis
  • some gastrointestinal diseases
  • senile purpura, or easy bruising in older people

Bleeding disorders can also cause excessive bruising. Here are other signs you may have a bleeding disorder:

  • a heavy period
  • a history of low iron or anemia
  • unexplained nosebleeds
  • excessive bleeding after a medical or dental procedure
  • a family history of a bleeding disorder

Good news, a yellow bruise on your breast is probably nothing to worry about.

If you have other troubling symptoms, see a doctor to rule out serious problems like inflammatory breast cancer or a bleeding disorder. See above for some tips to help bruises heal and give it a few weeks to totally fade.