maybe 3 to 4 months after using the new toothbrush, i noticed that my bottom lip
- toward the corner - gets swollen
. the swelling is like an elongated, rounded and raised bump shape.
when i wake up in the morning, the swelling is not present. the lip looks perfectly normal with no sign of irritation or swelling. after i brush my teeth, the swelling is there but then goes down after 3 minutes or so.