I too have been experiencing similiar symptoms as you described. I have pain, not terrible, but definately uncomfortable, between my shoulder blades. I belch all the time, whether or not I've eaten anything. And have what I guess is indigestion - it feels like I've got something stuck in my throat, especially when I swallow, although I know that there isn't any food there.
I also just completed my first liver/gallbladder flush a couple of days ago and felt better immediately but then later that day started back up with the same symptoms and still have them now. I've considered doing more of the flushes, I see they are recommended two weeks apart. I was just wondering what you've done. It sounds like we are experiencing similiar symptoms and if it's not too nosy I would love to have an update on how you are doing.