welcome dsmart. i'm so very sorry for your loss. i really don't think you have a decision to make though. you need to go thru this procedure to get your body healthy again.
i think you're going to have to have time to grieve. maybe you need to make the decision to allow yourself that?
again, i'm so very sorry for your pain.
my wishes and thoughts are with you now and in the morning.
be safe,
kd