Some days I just have random waves of anxiety.  Not so much physical symptoms but my mind just shifts to problems in the past and negative experiences in school even though they have no relation to the present? I just can’t stop worrying and overthinking about it and it even haunts me in nightmares. I can’t concentrate on anything else. It’s mostly about times where I’ve been rejected. Am I overreacting? Because sometimes the anxiety goes away the next day and for some time. It’s like whenever I have something fun or exciting to do it creeps back up and ruins everything! And it’s all in my mind. Please help!