Maybe you need a break and a carb reefed. Look up carb reefed on this site and you'll get a lot of answers, but essentially, you eat a lot of carbs and a little fat after a really big workout to refill your glycogen stores. Also, you might just need a break to let your body heal itself. Spend a week doing nothing but low level activity and let your body do it's thing in the way of repairs. I bet if you do you will experience some strength gains. Good luck and keep at it!