Recently there was a topic here discussing this but it was lost now. I recall that the last posting was from a mummy who bought OTO belt but was found that it affect the position of her "uterus ring" (I am sorry I dun know the exact translation) after using one week. I would be much grateful if that mummy can let us know her follow-ups. I have tried OTO before but found that the vibration is too strong and I have the same concern as well, i.e. affect the organs, like uterus and disgestive system. Can anyone share more about it?