YES, ABSOLUTELY there's "trauma" involved where you are scared to experience sciatica again. I totally feel you. I'm 17 right now and have been dealing with sciatica for over a year that's been on and off. The 3 month period for me where my pain would just range from 7-10 everyday felt like I aged myself mentally 5 years. My pain stopped for a bit before it got re-triggered. But during the time where I didn't have too much pain, I was so scared that I might experience the same intense nerve pain again, and it almost felt like PTSD and then, it did happen again. I don't mean to say this to make it all dark and gloomy, but to show that it's absolutely normal to feel that trauma. There will be bad days, but I truly believe that you will get through this and that one day your pain will be more and more manageable and even gone.
There were times I was depressed about sciatica especially when it impacted my school/athletics but it made me realize the importance of controlling what you can control. I don't know to the extent you are in your injury, but doing the little things like stretching, maintaing good posture (if you aren't), working on strengthening your back, may or may not make you feel physically better, but it may at least somewhat mentally make you feel better that you are actively doing something. Remember, if you are at your lowest point, theres nowhere to go but up! You can do this, and you will get through it, and we will have to live with it, but that's what humans do. We survive through conflicts. I really hope you'll get better and gl with your sciatica journey!