I did not have this feeling, but it's not surprising. There's a lot of breast tissue in the the upper outer quadrant towards the underarm, so there'd be work for iodine to do there. For the reading of the ultrasound taken when my breast tissue was at its worst, the radiologist said that that area was of the most concern, and the most likely to develop further trouble. I believe the pulling being felt indicates iodine helping to repair and restructure the tissue, much as when you feel tugging and pulling as skin trauma heals itself.