You don’t need to worry. Galatians 2:20 says you died. So… you died. Dead people don’t worry. Not about their bodies, circumstances, problems, future, nothing… it’s no longer you who live, but Christ who lives in you.
You may ask: How can I make this a reality for me? If you are a child of God, it already is. It doesn’t become true because you believe, you believe because it’s true. It doesn’t matter how you feel, it’s fact: you died, and now Christ is your life. God said so.