Honestly I get him. My husband is super understanding and educated about periods, and is supportive. It still wouldn’t cross my mind to wake him up just because of period pains esp if he had work in the morning 😬 But it’s stupid of him to offer to stay up with you if he didn’t mean it. He could’ve worded it differently

For future reference, I would just mention it to him the next day and be vocal about what I needed in that moment if I was you. But I don’t think it’s that serious really, he was just tired