Dear eternal_now, you are so young and is fortunate to have a
complete set of organs your Parents have given you. Please do not
act hastily. I personally believe that better karma is to look
after your precious health so do not venture into donating your
organs upon impulse, and rather donate money to the suffering
patient so that he/she can afford medicines and healthcare. This
way, both your parents and you and the patient are 100% benefitting
from this action and this importantly will not hurt or traumatise
your parents who will worry for your health status if you do donate
your organs. And take care of your health too then you will learn
to take care of your parents health and this is even greater pure
greatness of the human essence. Btw you do have a kind and
passionate heart so God will bless you in whatever actions you do.
Seek in thine heart and you will find the answer around
you 
yours sincerely,
sgforumer :)
Hi osakco, I think you're misunderstanding the context of my
post... I'm not asking about donating organs, I'm asking about
donating organs when you die.
In Singapore, the policy is that those who do not opt out of the
scheme, when they die below a certain age, their organs will be
harvested immediately after death to save other needy patients in
need of organ transplant.
In Mahayana (and likewise Vajrayana Buddhism), a person is known
to undergo bado, a state of transition between death and
rebirth, immediately after death. In other words some
consciousness remains even after post mortem state... up to 8 hours
after clinically dead.
This means you can still feel pain when you are undergoing organ
donation after your physical death. This is the dillema.
Thanks for voicing out your sincere concerns though... and the
opportunity to clarify myself.