It’s every woman’s worst nightmare – feeling a lump in their breast and having their mind race a million miles an hour as to what it might mean.

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For British woman Hayley Browning, finding a lump was the last thing she expected when she happened to rest her hand on her chest while she was lying down three weeks ago.

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Admitting she usually checks for lumps in the shower – as she had been advised to by websites – Hayley realised the lump was nowhere to be felt when she stood up.

Hayley's determined to let women know the importance of checking for lumps while you're lying down after her own experience. Photo: Facebook/hcbrowning

Booked into an emergency doctor’s appointment that same day, Hayley was later diagnosed with cancer and is preparing to undergo chemotherapy.

Hayley found a lump three weeks ago, and is now undergoing chemotherapy. Photo: Facebook/hcbrowning

“I'm hoping to share a little trick of mine with as many people as possible, which could potentially help save someone's life,” Hayley wrote in her Facebook post which has since gone viral.

“I could only feel the lump whilst lying down and it completely disappeared standing up.”

“Most websites tell you to check for lumps in the shower but if I had followed this advice, the lump may have grown too large to be treatable. Not even the surgeon could feel my lump when I was standing up.

Hayley's Facebook post has 84k reactions to it, and 120k shares. Photo: Facebook/hcbrowning

“So, this is a call out to all women to check for lumps lying down, as well as standing up.”

Hayley, 27, is determined to share her story in the hope that it might make women more aware and cover all their bases when they are doing a check.

“If I had only checked while standing up, I may have found it too late to be treatable,” she told the Daily Mail. “But that's something I don't even want to think about.”

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