Sorry for the late reply. I can relate to you feeling like you can't cry in front of your dad. My dad is also the same way. He is very easy going and takes things as they come, and he doesn't like to see me or my family cry. It can be hard at times, but I would say to try to take some time for yourself, maybe a quiet room and just cry it all out. It's completely normal to cry in your situation. We're grieving for somebody who is still alive, but we are also grieving the tomorrow's we'll never get. Since I'm only 26, it feels like I'm being robbed of my dad. My life is finally going the way I want it to, and my life is just beginning and now my dad's life is ending. It's not fair. We will cry. I don't cry so much anymore, but sometimes before bed I'll think about it and just cry before I head to bed. 

It is hard dealing with this as my mom and I are taking care of my dad. He still seems relatively healthy, but he's not able to work anymore becasue we found out how fragile his bones are. It's hard because he's always been such a strong man, but my dad has accepted this. Although he has accepted this, he also has a high belief in God and believes he can be healed of this. I hope that my dad will always have this piece of mind, and i think that will get him through this. I would give absolutely anything in order to heal my dad. It's really hard dealing with the fact that we can't really do anything about this situation. All we can do is sit here and watch him die, which sounds morbid, I don't mean it so literally but I just feel so helpless. 

If you ever need to chat, I'm always here.