My lower back has been killing me for a couple of weeks now. When it first got bad i took a week off of lifting and that really didnt help much. My back doesnt hurt when im doin the lifting but right after im done with a set it hurts just to stand or sit its not a sharp pain more of a tightness pain. so i have been doin alot of stretching and that only gives me temp relief. I started my cycle about two weeks before the pain started and put on a good 15lbs in that time do u guys think the extra weight is the reason for the pain? if not what tips do u guys have to try and help?