Can't open my world after dying

I was on my way home when I died a really long way away from where I spawned in the world. Stupidly I slept every night on my adventure so I respawned in a mesa biome. Or at least I think I did because it wouldn't let me respawn. I closed the app and reopened it, but it got stuck on loading chunks. I restarted my phone, but the same thing happened. I really like this world and I don't want to leave it behind yet