So, I rarely have back problems, but for 3 nights in a row I had to sit in a really bad chair for my entire shift at work and I woke up today with a little lower back pain (stupid work

). I know to take it easy and all, but is there a way to tell if it's just stiff muscles, or something worse? I lift squats and deads on Tuesday (in two days) and my plan was to go heavy, but now I'm a little worried

. Should I just see how it goes or just take it easy for a week or two? I've been taking it easy the last few weeks because I've been playing around with suits and wraps and such so don't want to continue taking it easy. Also, is heat of cold better? I've been using heat to try to relax the muscles, but I'm not sure which is better. Also, it doesn't hurt when I move around or lift household items so much, only when I sit down. Crazy. Hope it is only temporary! Any thoughts and/or advice?