personally I and some of people I know have similar body sensations as you have mentoned, and believe me, I know how discomfort they might be. I have visited many "ususal" doctors, and spend some time for trying figure out what is wrong, why do I feel like that. fortunately, I was told about vipassana meditation. I gave a try. sat at the 10 day course. the most importand thing I have found for me was the experience of "how the mind and attention efects your body sences". I have found that disbalanced mind and attention makes the most of uncomfort. after two years of practice I feel better. sometimes I still have some biger or smaller experiences like "blocades" but in general senses have changed significantlly and they do not dissapoint me so any more. also I became more aware of myself
I have never had reiki done to me but I strongly believe that healers can help you. also I believe in vipassana technique, actualy I have experienced how strong it is.
I think if you will getin to daily practice of meditation - you can promote your own calm, wisdom and intuitions who can also help to solve blocades problem and enjoy many other benefits of it ;)
you can find about vipassana at: