Olivia revealed her diagnosis on TikTok
The Belfast native was diagnosed with skin cancer after getting a lump examined in hospital.
She uploaded a TikTok video on Sunday night telling her fans about the awful news but she quickly deleted it after receiving backlash in the comments.
She later posted a different video to her other TikTok account giving followers more details.
Olivia said: “I had a like lump, tumour in my arm and I got it removed and I got my results back and it’s skin cancer.”
The 21-year-old said she’s been diagnosed with a rare form of skin cancer called Dermatofibrosarcoma protuberans (DFSP).
She said: “It’s really not that big of a deal like I just need to get it removed and then I’ll be fine hopefully.
“Nine out of 10 people that have it are born with a gene mutation. It’s not something you inherit either.”
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People just assumed it was because of sun-beds..
She said: “I know when people say skin cancer, people immediately think melanoma.
“I don’t really know much about it. I do know that skin cancer can often be caused by UV exposure, like in the sun or in sun-beds.
“I go on holiday a lot, like I’ve been known to sizzle myself in the sun and sometimes I have been known to use sun-beds in my life, like it’s stupid.”
Olivia received a lot of negativity online following the announcement.
She said: “I started getting comments being like ‘Well you f***ing deserve it because you got sun-beds before’.
“To be honest, I probably shouldn’t have said anything on TikTok if I didn’t want people commenting and telling me that I deserve cancer because the internet is a scary place.
“Don’t do sun-beds and don’t sizzle yourself in the sun. We all know that’s not good for your skin.
“But also, get any lumps checked that you ever have. I also don’t think that anyone deserves to be told they deserve cancer.”
Olivia warned her followers to get themselves checked regularly.
Lauren Whelan commented: “Swear people think they’re doctors in the comments, it was not the time or place. Well done for being so open and vulnerable, so strong.”
Keelin Moncreiff said: “The negative reaction you received was disgraceful. As if you’re not suffering enough. Sending healing.”