let me suggest to you a type of meditation that most dont do at all, its good to ground your self and meditate with music even going into trance states of meditation,but this is not a true meditation to understanding ourselves.
meditations should be do on being aware of your body sensations to the thoughts that play out, when we meditate we should be trying to understand our own body and being aware of the mental states that play out, doing so will help you in the understanding of any emotional baggage that you be be holding on to weather it be past pains or even feelings that you have towards a person or emotions that are unbalanced, you need to carefully feel this in a meditation to understand yourself and release those feelings and thoughts.
in a metaphysical sense if i was to do a normal mediation and my mind was directed towards some pain in my lower back area it would indicate to me that am letting some form of abuse happen to me most case's of back pain are related to abuse now abuse can come in many forms weather it being friends abusing your friendship or a past abuse to a financial abuse, this abuse can cause back pains and unsettling feelings to arise, the way to deal with them is to face them with care and understanding given them attention when we focus on any part of the body that brings pain or unsettling moods and be aware of it giving it care just like the breath the in breath and the out breath we find it can dissolves leading us towards our deepest problems.
just a thought for you and you don't need to take that as something you can do but try to look into it and experience what am saying, i work with many people that find them selves being unsettled in meditation, i work with Buddhist meditations and find they are the best in dealing with our body's so that we can become aware of any mental states that cause use these unsettling moods, many find peace after a few weeks work on this perhaps you can find some new ways there..
just mail me if you need any info..