I was deadlifting today and hit a new PR of 305x2(yay!) and now 9 hours later I wonder if I may have pulled something. The muscle on my right side next to my spine feels tight, it doesn't hurt but its noticeable. It doesn't hurt to touch it in anyway or to stretch it, so I wanted to know, did I pull it? Should I be more careful of my form? Is it just a side effect of pull so much weight, the likes of which I've never pulled before. Thanks, peace.