Having a problem with the controls.

Guys, I need some help.

Okay, it's been a while since I've last played my PS4 right? I get the urge to play and finally beat Bloodborne, since that's been in my backlog for a while. So I pop it in and start playing, but the most curious thing happens.

For some reason, my character will randomly attack and do things when I'm not pushing a button. Like, he'll just randomly swing his axe or shoot his gun. Now, I've played around for a bit to try and see what the problem was. So I figured out that messing around for a bit will eventually make my character stop attacking. (For example just running back and forth) However, when things get intense, my character will all of a sudden just start attacking again with no input from.

I don't know if this is because of my PS4 controller, or if there's a problem with the software input for my PS4. Does anyone have any ideas?