happens to alot of people.
In fact it almost happened to me except i noticed it before getting into the woods. I tie mine around my bow handle so when i pick up my bow to get going if it's not there i notice. I also keep another in my bag now.

I forgot the bullets on a gun hunt once. Since I don't load them into the gun until I get to my spot. fortunatly they were in my shooting bag in my vehicle so the 300 yard walk back was not terrible