I had a very experience breaking bug or glitch happen

Ii went to my nether portal and as i went to go in it i was stuck in the loading screen generating the nether. And then while i was loading i was suffocating and there was nothing i could do. I ended up dying in the loading screen and then i respawned and went back to the nether again and my stuff is nowhere to be found. I tried digging up and down but its nowhere to be found. I had some really expensive and rare items in my inventory this is very dissapointing