Hi Dave, I also lost my wife in August after 44 years of marriage, and to make things worse I have just come out of hospital after a four hour operation and I am in a lot of pain as well.
Just take life a day at time and do not turn down any help offered to you.
This forum is great for any support you need, as we have all, or are still going through the loss of a loved one.
They say that things get better with time, but that has yet to surface in my case, but we are only at the start of the grieving process, and everyone has there own way of dealing with this.