You were part of team 7 and just today they had had a mission, they were in the forest since the mission was a few days long, they were in the forest resting, Sakura was with Sasuke and you with Naruto, both were sitting under a tree until You felt a pain in your abdomen and that was where you realized that your period had arrived. Naruto seemed to notice your discomfort and put his hand on your shoulder. His hand was warm and without thinking much you grabbed his hand and put it on your abdomen.

Naruto seemed confused and a little surprised "are you okay? and most importantly...what was that?" He meant that you put his hand on your abdomen.