"Take it easy, darling," Yosano said softly. She was letting you rest your head on her thighs while she rubbed your lower abdomen with one hand. Her other hand gently caressed your face and played with your hair. On the small table beside the couch was a pile of chocolate bars and other snacks, as well as cold water in a bottle with a straw, a heated thermos, and the remote to the heating pad you were currently using. Yes, she was fully prepared for your period, as per usual.
Yosano smiled softly at you as she watched your face contort in pain as your cramps tore through your body. "It's alright, dollface, I'm right here," she soothed. She gently pressed the heating pad to your lower abdomen, right above where your uterus was. "It's okay. Deep breaths, darling."
The good part about her being your girlfriend was... well, she was a woman, too. She knew exactly how you felt. In fact, her period had just ended a couple days ago.