How you deal with disclosure of your diagnosis is your own choice - a decision that you make according to your own circumstances and one that you need to be comfortable with. Your true friends will understand this and will support you one way or the other.
People who are not as strong as you, unfortunately, will disguise their weakness by finding fault no matter which way you go. Denial, feeling sorry for yourself, not being honest - whatever they say, your job is not to satisfy the doubters but to get the most out of your own life.
Smile. And get a dog.