"Shh, it's alright. I got you." Aventurine whispers into the shell of your ear as he rests his chin on your shoulder in your discomfort state.
His hands remain over your stomach as the heating pad nestles right against your pelvis, the warmth of his body spooning you as he occasionally hums a melody you're not use to before he plays with your hair between his fingers. He knows all too well of the pains that you're currently dealing with as it was a reflex of his to sooth you the moment he saw you curled up in bed with tears staining your cheeks.
Period cramps are the worst from what he's heard and seen because, well, he use to help his sister whenever she had them when he was younger. He remembers the descriptions of how painful it is on the body and how it can spread to other parts while the discomfort of constantly shedding the lining was. It's why he's comforting you like he would for his sister by hugging your curled up form and speaking to try and distract you from the constant reminder of your body being harsh on you as a whole.
Even though he's providing everything you need, he feels like he needs to provide you more.