HELP!!! I have cancer?

Sorry I posted a similar question before but nobody answered, so to cut a long story short I am a 20 year old female and had my gall bladder removed because of a large cancerous tumour growing on it, since then I have found out I have a tumour on my liver. The thing is my friends, family and fiance are all treating me differently, don't get me wrong, they are all soooo supportive, but they are treating me like I'm sick and I hate it, I know I'm sick but dont need to be reminded all the time. As for how I feel..... I feel numb about the whole situation, I don't feel sick at all and I feel as if what will be will be and because I already have cancer there is nothing I can do now so what is the point in worrying??? I really don't feel anything, completely numb. The fact that everyone else around me is worrying about it makes me feel as if I'm strange for feeling this way! Is it normal to feel completely numb about the whole situation? Any advice would be greatly appreciated, Thankyou for reading xx