I'm so sorry, honey.
Countless people in my family were taken by cancer, including both my parents within weeks of each other. I offer you my condolences.
I am not sure I cried enuf then when my parents had cancer-- I was in so much shock. But I cry now about things when it's too much, it takes alot to make me cry though .. but I can tell you, crying can be painful -- the headaches, ... and more (I throw up if I cry too much!), it's just takes alot out of you. Some day...... you will be able to look back without tears, but joy. It all makes us strong, so we can be tough old ladies in the future.