So... not sure how to put this. My son and I are very new to minecraft. I searched online for similar problems but cannot find any info so either I have done something wrong or I dont know how to search for the answer. Here is what happens. I finish playing Minecraft and select "Save and Quit" and exit the game. Then later, I load Minecraft and then choose my world (I named it "Dad's World" since I play with my son.) That is where the problem sets in. I seem to spawn up in the air above the shelter I built and I instantly die. It then gives me the option to respawn and starts me on the roof of my shelter with no issues except all my items are scattered about the vicinity around my shelter and floating in the water. So I spend lthe next couple minutes running around and gathering all my things back up. Getting tired of this and cannot seem to find any help online. Pretty sure this should not be happening. Not sure why it keeps doing this. Can you help? Seems like a bug of some kind.

Thank you for your time and help.