I feel so up and down at the moment. I literally feel like my heart is physically breaking at times....I can burst into tears in the middle of a coffee shop (which i did the other day which caused a lot of stares!)...and I just feel so helpless. My dad is very very tired....he last had chemo 4 weeks ago & apparently it is due to the cumulative effects of the chemo. Some days I look at him and I think he has…