You are not alone! Have you tried talking to your sons teacher and telling her you struggle with anxiety, my son is young but have already thought about what i would do if I still feel this way, I find confiding in people really helps, I was so ashamed for so long but people are actually very helpful and it has really made me see the world differently, for example I get anxious at grocery store check out lines, especially if I have alot and someone is behind me, i went to customer service and told her about how i was feeling and she helped me there and if i ever felt like that again she would get a manager to ring me up special, I cried and thanked her so much for being so kind to me! I feel like its a dirty little secret we keep but if you had a broken leg youd ask for help opening a door right right?