I am so sorry for your loss. I really don't know what to say except that my heart goes out to you.
On the health exam side, I would ask about a mammogram and a pap smear. Stay on top of those. If you are 50 or over, do the colonoscopy. These are all things that suck but the tests are less onerous than the treatment and it's always better to catch them early. I would also look into getting a flu shot, it in theory keeps you healthier. I know I have been harangued into it every year by my oncologist, and I think it's working for me - if i get sick, it doesn't last long. Also, take care of your teeth and vision as well. I used to just never go to the doctor or dentist, but now I figure if insurance will pay, it is better for me to stay up to date on all this stuff. It is good that you are wanting to take care of yourself.