Esmerlda,
We went thru a similiar situation with my father. Went into the hospital, diagnosed with Cancer, and Dead within the week. It was quite a shock, and because it happend at Christmas, was never quite the same Holiday for us.
Time has somewhat dulled the pain, so that the good memories are able to come thru, and there will be moments of happiness again in your future, for you and your MOM. Just hang in there.
Let us DVCers know if there is something we can do to help.
My personal trick was to take a nice bubble bath, for a half hour, and just turn everything off. A way to recharge, so I could be strong for everyone, and face the world again.
If you would like to PM me your info, I'd be happy to make a donation to the American Cancer Society, or some other charity, on behalf of your father.
The fact that your pain is so sharp lets us know that he must have been really special person.
Again, so sorry, Goldi