I'm Just Gonna Keep Faith....

I just received my key from my fiancé last night. It was suppose to be a Xmas gift but he decided to give it to me a few days early. I have never heard about the giving key before but after my fiancé explained I fell in love with it. I was recently diagnosed with cervical cancer and me just hearing the words "you have cancer" scared the sh*t out of me. I'm 25, have 2 kids, engaged, why me? It affected my attitude and mostly my relationship. When my fiancé gave me my key he told me he was sorry he didn't know how to react in this situation and seemed "emotionless" but he told me to have faith, that everything will be ok and to have faith in us. I already had one surgery and hoping it was successful, if not I'm just gonna keep faith....