i go for reps... overweight when i squat...i.e 10-15 reps per set and 4/5 sets. when i`m done and doing leg press or calf raises i have a lower back pain right above my butt. it only lasts 15-20 minutes and rarely is it noticeable the next day. is this normal and do you guys have this similar slight pain immediatley after squats? i feel my form is good because i`ve asked some people who frequentley do squats at my gym and they said its fine.