Just be patient. Training 5 days a weeks seems a bit much for a drug free lifter. I would suggest dividing your lifting into three separte workouts including a heavy squat day, heavy bench day, and heavy deadlift day. A light squat can be included on your heavy deadlift day. You should separate your heavy squat and deadlift workouts with the bench day to allow proper recovery for your legs, hips and back.
Rest is just as important as training when it comes to making gains.
Have a game plan. Break up your training cycle into three phases lasting 3-4 weeks each. Training like this allows the body to gradually adapt to the training loads so you can contine to make gains. After the end of the strength phase you can test yourself with a max attempt single or if maxing out doens't appeal to you, just rest with light training for a week to give your body and mind some time to relax and recover for your next training cylce which should start slightly heavier than the previous one. Don't fix your feet in the sit ups.