Dying on login or start.

Has occurred several times now. Will save game. Will play Minecraft later and start game. Immediately upon entry I die. Respawned twice at non-respawn sites. Twice this has caused the game to hang or freeze when I save and quit. Have tried full restart with Switch. Running version 1.8.1. Twice I've been respawned in the same place which wasn't a spawn point (my bed). Have lost entire inventory each time.