I'm 13 and lately I have had a giant hole in me why
Did you get shot with a shotgun? If so, you might want to head to the nearest hospital ... like now.
Metaphorically? Get diagnosed for depression. Physically? Go to the hospital.
giant hole in where?? O.o
I'm guessing your saying mentally, and unless you have gone through some sh*t in life, in which it may be because of that, it's because of your hormones. If its physically, than check a medical dictionary or call 911.