When we are healing our health problems from within, we are always healing firstly energetic cause (energy blockade) which has in the first place created disease / illness. That also means that we might not see the results of healing in the beginning, but surely we experience healing on energetically level. Our body can respond to healing in a shape of physical pains which can be challenging until you become aware that you are in a powerful healing of your health problems. So you do not need to be afraid of anything.
Physical pains during inner healing process video: