I had a student get shot right in front of me in the middle of class. Nothing has been the same since.

I am a high school English teacher in the Chicago area, where crime and violence have been a growing concern. The school I teach at has about 2500 students. About 3 weeks ago, I received an email that there was supposed to be a school shooter in the area. I didn't think much of it. I was in the process of giving the syllabus to my freshmen classes, so they were all sitting at a table, and I was standing in the middle of the room.<br><br>One of my students got up to go to the restroom or get a pencil, I don't remember which. As she was walking down the hallway, a man walked in and fired about 5 shots down the hallway. I didn't think a whole lot of it initially, because we have had plenty of lockdown drills in the past, and I thought this was just another drill. Suddenly, I heard the most terrifying, gut wrenching scream. The student that walked out of the classroom had been shot, right in front of me. The police arrived and rushed her to a hospital. By the time I realized what had happened, I was already in fight or flight mode, and I had to try and keep the students in the classroom safe. I thought the shooter was still in the hallway, so we all had to get under cover.<br><br>After about 20 minutes of the classroom being in lockdown, the police cleared the hallway and began searching the school. We were eventually escorted out of the school, where parents were able to pick up their students. I had already called my principal, and I was instructed to go home and rest for the day. <br><br>In the days and weeks following the incident, I felt like I had pretty well recovered. I went back to school, and I was still capable of performing my duties as a teacher. But this week, I'm starting to realize that this wasn't the end of the healing process. For some reason, I just feel really overwhelmed all of a sudden. I am having trouble sleeping. I feel really paranoid and on edge, like I'm walking on eggshells. I am really struggling to focus on anything for more than a few minutes at a time. I'm constantly thinking about the student who was shot, and I'm worried about her, and I'm worried about how the incident is going to affect the students and the school as a whole. I'm wondering if I should file a worker's comp claim, or if I should just tough it out and continue going to school, because quitting is not an option for me. I'm wondering what my future as a teacher holds, and I'm already feeling a bit burnt out. I'm not sure what to do.<br><br>What advice would you have for me? I've read a few articles, but I am looking for advice from real people who are familiar with the teaching profession.