Lost pickaxe

[usernameisanime]

I lost my pickaxe when i had a full inventory of blocks and the slot where the pickaxe got replaced and i had it in my hand but i closed the inventory and my pickaxe disappeared. pls i would want to get it back.
Name: hgghh

 

[mcisbad]

Never trade or move your pickaxe while you are in a mine with a full inventory, i learnt that the hard way.