Yesterday I have suffered severe hallucinations and a complete mental crisis after being told by a doctor that I a problem, which I carried off for more than a month... Is actually related to a genetic disease I have had since I was a child.

There is no cure for this.
And this also brought back my suicidal depression all in maybe a few hours after more than a year spent in recovery from said depression.
My father also took a big mental hit from my conditions... He's deeply sad now because of myself....
I wish I could do anything just to fix things and not ruin his life in this manner... But there is nothing I can do now.
The Damage is Done.

Now I am alone and sick with some minor flu (again)... Altho I believe most of the sickness is coming out of the extreme stress and depression.

Today is my birthday.

(Also Valentine's day really is a piece of Shit. No doubts).

that seems alittle co-incidental....but you should hope for your sister's recovery, regardless of what she has. (wish I did know though.) In the meantime, you really shouldn't care about the holidays, family comes first regardless what day it is. *hug* just try and hope for the best.