Do i have depression symptoms?

I have been miserable for the past year. I became addicted to porn, and began self harming three months ago or so. One of my parents has GAD, and a grandparent has bipolar disorder. I always feel tired, and nervous. I have felt so stressed and nervous about everything i have ever done in my life. i used to not be able to go to the movies, because i got sick one time, and got sick every other time i went, so i didnt go for two years. on a retreat, that was only for two nights, i almost had a panic attack, and cried my eyes out each night, and felt a lack of reality. yes, i was the only one out of 35 who did this. i feel guilty about everything i do.