What would you do?

I would appreciate an honest opinion from those who call in here of my decision.
This time last year I was in the throes of having a complicated operation of having a metal plate in my back attached to a metal pins in my leg after having a fall that broke my hip in three places. I was trying to look after my hubby who had Dementia when this happened. When having to spend 6 weeks in the hospital after the op my son who had retired the day I had the fall came to look after his Dad.
When I finally got home it was taking me all my time to get around as well as looking after hubby because I was his carer.
It got to be TOO much for me and my dear hubby was taken in to a nice nursing home. I feel dreadfully guilty because he NEVER wanted to leave me and he died after being there for around a month.
Since then I have had two more falls due to the very dicky hip and finished up in hospital both times. I already have a metal pin in my right hip from when I broke it 10 years ago.
After many Dexa and Rheumatology X-rays scans I have now been told that my Osteoporosis had got a lot better after taking Alendronic Acid medication for 6 years BUT it had left me with Cervical Spondylitis which was not helping me when trying to walk and the main fracture had not healed in my hip plus the metal pin had snapped in my leg.
I have been offered a new hip but it would be a complex op because of removing all the metal before proceeding.
I go back in a few weeks time to give them my decision which will be NO because if I can keep the pain under control as I am now I cant see the point in me going through all that at the age of 86 as I am now or 87 if they cant do it right away.
In my opinion that replacement hip would be better put in a younger person who has more years to enjoy it.
Into the bargain I started with Epilepsy when I was 80 and seizures can happen anywhere or time. I also had a pacemaker put in which should have been a simple thing to have done but it went wrong for me and I had to stop in hospital then for three weeks.
The BEST thing that has happened this year is that I will become a Great Grandma for the first time in December and at least I will be able to nurse my Great Grandson even if I cant take him for a walk.
The doctor has upped my painkilling tablets and she tells me I have not grieved for my hubby properly with all the pain and upset since he died and she would like me to have counselling if I agreed.
I have a super family who do what they can for me because I dont want a carer unless I am too far gone to wash and dress myself although it does take me ages. My family has left the decision to me about the op because as they said with having my faculties they know how much I can do.