Pls help

Hello everybody, I have been going through crisis lately and its caused me a lot anxiety. It all started ever since I started back sliding I’ve always had a fear that I would be sent to hell if I died unexpectedly but now it’s worse than ever this crisis started about two days ago and I’ve been getting the feeling that I would die, and I have a strong feeling to go back to practicing the way I was before I started backsliding which has put me more on edge someone help Is this my mind playing tricks on me or something else that’s bad