Logged in all gear and inventory gone

I've been playing split screen with my husband for over a year and I logged in today to our world and all of my gear, tools, progress is gone. My character was at the original spawn point for our world. Last time I played I was in our base and slept in the bed with all my equipment and it's just gone now. We've tried restarting the game a few times with no luck. Not sure what to do?