Marriage is hard lol

Y’all, so my husband has been acting weird in my opinion but he says he’s fine. During arguments he just acts like he doesn’t really care, but he’s never been one to argue back, he hates arguing. He just seems distant but then again he doesn’t at the same time. He works 3rd shift, so sometimes he’s really tired. And while he’s at work he usually asks what I’m doing, makes sure I’m not doing anything crazy but he’s stopped doing that. Maybe it’s just , Am I overthinking or should I be worried?🥺