So I'm 20 and my mum was diagnosed with breast cancer yesterday. Although it's still in its early stages and she has a very high chance of recovery, I am still dead worried. I feel that I am not showing her enough of how much I care because I did not/could not cry like my sister did despite all the feelings.
I have a lot to share but don't know where to start or who to share it with. I used to be (not so much now) very rude to my mum and would yell at her over the smallest problems and did not appreciate her care. I feel very sorry for my actions. There's just a lot going on at the moment and I don't really have anyone to share it with or turn to as I don't have much friends in real (I was a quiet guy in school).
I'm also stressing about my own life - fearing I'll be 'forever alone' and not being able to get a job once I finish uni because of my shyness.
After listening to a few songs, I feel motivated to make a video sharing my real feelings, admitting my past errors and apologising as well as sharing my wishes for the future such as her being able to go to my graduation ceremony, live to see me get married and be successful then thank her for all she's done.
And maybe take the opportunity to admit the feelings I had for this girl in one of my classes from last semester (who I didn't talk to but have on Facebook).
But I don't want to feel that I am trying to take advantage of this situation to make a video for my own gain (I admit I do want some empathy from my Facebook contacts/old classmates).
What should I do?

