Finding out you have cancer is one the hardest things a person has to go through. The stress of worrying if your life will be cut short or how you could ever afford the mounting hospital bills are only some of the worries that come with such a diagnosis.

For one couple, they thought they had beat the odds. Sara Chivers was diagnosed with cancer almost ten years ago but has been living cancer free for the past couple of years.

Unfortunately, being cancer free did not last forever

Recently, Sara found out that her cancer returned, this time in the form of three brain tumors.

Her condition is terminal.

Unfortunately, that wasn't the worst news Sara and her husband Leigh would face.

Amongst the stress of starting chemotherapy again, Sara and Leigh realized that their 18 month-old "had stopped eating. [Alfie] appeared lethargic and vomited regularly. He also stopped using his left hand."

Worried, the parents rushed their son to the hospital. After multiple tests they found out that their young son also had a brain tumor. The mother and son do not share the same type of brain cancer.

Accordingto an oncologist on the case, "there was a better chance of winning the lottery than a mother and child developing different types of brain cancer."

She wants her children to know that she loves them

In case the worst happens to her, Sara decided to write a note to her two boys.

She starts off with a beautiful message, "Dear Hugh and Alfie, I won't be around to see you grow up. It's a hard thing to say and even harder to face."

The letter goes on to explain this mother's favorite things so her sons can get to know her a little better. Sara then explains that they shouldn't "be afraid of expressing your emotions" and wants her boys to know that she "will never tire of hearing 'I love you' from Leigh, you boys, my family, friends."

Sara encourages her sons to achieve great things in their life, to travel and read. She urges them to enjoy the world that they live in and the life that they have.

She also reminds them how hard life will be for their father becoming a single dad, "Be kind to your Dad. It won't be easy for him raising you alone, but every decision he makes will be with your best interests at heart. He is an exceptional father and role model. Don't let him doubt himself or the wonderful job he will do shaping you into the men I dream of you growing up to be."

She ends with her love - "I will be forever grateful for the time we spent together, the memories we created, the love we shared ... Always will be. Love, Mum".

Sara shares her story for awareness, not sympathy

Though the Chivers story is tragic, Sara wants people to be aware of cancer victims and work together to find a cure.

She said, "I want to shine a light on a disease which isn't picky in its victims, which targets healthy little children who haven't started living, and I want to do everything I can to help find a cure." she said.