For the past few weeks I've been doing deadlifts on back day and squats on leg day within the same week. I've progressed on each one each week. At first I thought my back was getting stronger, the muscles themselves grew alot. But lately I've been noticing some 'uncomfortableness' in my lower back. I notice it while standing or sitting for awhile, riding a bike. I think I may be going too heavy on the deadlifts, sacrificing form for more weight. Should I stop doing deadlifts all together? (I can't give up squats). Or should I do deadlifts lighter or every other week.? I don't want to mess up my back, deadlifts are suposed to strengthen it, not hurt it. Any suggestions?