So i saw my game wasnt saving so i cleared up all my saves except my most recent and then i overwrited my most recent and now i dont have any saves please help me i had 4 days and 15 hours on it.

By the way i did it in game and on the xbox one for Fallout 4...

If this is still a problem you're dealing with, take the xbox offline without quitting fallout (in xbox settings) and try to save again.