Lost stuff

I went into my brothers world and I went fishing. I got a gold crate and when I went into my world, I lost it. :-( it wasnt in my inventory as well as my wallpapers and my presents. I would have rated this five stars if this didnt happen. Also, I created a world on iCloud and when I tryed to go on it it say"create a world" that made me mad because I worked so hard on that world, so either. iCloud deleted it or something is bugged

Jdk128 about Terraria