Sorry to hear about what you're going through. That is really low how the guy at work treated you. It's good that your boss is supportive. Hopefully things will calm down there soon. It's good your keeping in mind that you are not working there for anyone other than you and your family since worrying too much about what others think at work only makes stress worse. There's nothing wrong with keeping to yourself. It's a good way of taking care of yourself at work so that you do not get more overwhelmed.