1.5 gram of protein for every pound of weight.
Omega oils and multi vitamin is a must to stay healthy and keep things running smoothly and oiled, pun intended.
Creatine wont make you strong, so I have no idea what happened to you lol. Creatine is purely about water retention in the muscle for size and pump. It does however help in recovery, so Im guessing perhaps you're over training right now and have burned out your bench. You should do each muscle group once a week to make sure you recover enough to push at your optimum.
Take a protein, most def you need protein powder, and if you're bulking I cant recommend oats enough!