“I have made my wishes known to my husband and my parents.”
Just make sure that you, your husband, and your parents know what they’re doing, and don’t be swayed by doctors or lawyers, if you ever decide to get involved with them. Please do your own research.
For example, if you say: “I don’t want to be on a respirator,” it could mean one thing if it would only prolong an imminent death for months or years, and another thing if it would only be needed for 48 or more hours after an accident, and one could be restored to normal health.
I’m glad you’ve made your wishes know to your husband and parents, rather than lawyers.