Advice

26Y female here. So I was talking with a guy from last few months. Used to share everything with me. He had some career related stress. Last I met him in start Jan, after that he completely cut off all the communications with me. I called him also but no reply. Dropped message as well. I came to know these days he is way too much stressed. I want to call him and ask about his whereabouts. But I am confused, should I call him or message him? Or just leave it.