Soreness after a liver/GB flush is fairly common and can take a few days to subside. I noticed you posted on the Reconnection forum which is energy healing. If you would like this type of healing for your issue you can PM me.
Telman has written that this may be due to a stuck stone so you could try taking another dose of Epsom Salts . You could also try stroking gently down the abdomen from the sternum. I think it is best not to eat solid food, just water, juice or a balanced electrolyte sports drink.