So yesterday, Stinkman and myself filled our packs with weight and decided to walk around the neighborhood. The fact that it was pouring rain didn't bother us, but I noticed that my lower back started to hurt about 1/3 of a mile into our adventure. I adjusted my straps and everything, but it didn't alleviate the pain. I then tried standing up as straight as I practically could (I admit I tend to slouch sometimes). To my disappointment, that didn't fix the problem.
Has anyone experienced this/does it go away/am I doing something wrong? I know it's kinda hard to answer since you don't really see me with the pack and can point out exactly what's going on, but any advice or insight is always appreciated. Thanks!