Are these muscle spasms a type of seizure?

I’m 20 years old. When I was about 6 or 7 I was diagnosed with partial complex seizure disorder and epilepsy. My seizures never got that bad that I remember, my mom never put me on medication because she always told me the side effects were really bad. I’ve been told it can cause death and even worse seizures. My whole life I would get random muscle spasms and twitches, I easily lose focus, bright lights give me severe headaches, ones so bad I can’t see and I’d get minor spasms in my face and arms. Whenever I get under stress or overly excited, I’d start to twitch and get spasms in random places of my body. Typically they’d last a few seconds to a few minutes at the most. Well, when I was 18 I slipped in my shower and hit my back an inch away from my spine, on the facet. Worse pain I had ever been through. I didn’t go to the hospital right away, I didn’t have insurance. I tried to avoid the hospital as much as possible even when the pain was getting worse. A few days after hitting my back I started getting this pain in my back like all the muscles and my entire back would tense up and I couldn’t move, along with serious pain. The pain got worse and worse everyday to the point I was screaming and crying because I couldn’t handle it. My mom took me to the hospital. They gave me some meds. and Just said these are muscle spasms that I’m going through, I ‘’probably’’ ruined the alignment in my back and it should heal over time. It didn’t. It got worse and worse, I’ve suffered from HOUR LONG spasms for the past few years and they keep getting worse. I’ve seen 2 other doctors since the ER, both have told me there is nothing that can be done, that I have to let my body heal on it’s own. The pain has got so bad that I barely get sleep, I get the spasms so often. Sometimes they only last a few minutes with no pain and other times they last an entire night. I get random spasms EVERYWHERE. Literally from my eyelid to my toes. They last a few seconds to a few minutes in random areas, but the over all time the spasms everywhere don’t go away for hours at a time. I’ve tried seeing a neurologist and I got an MRI. The guy I saw was very disrespectful and mean, apparently in my MRI it shows nothing wrong with me and he said I can’t be having spasms because my MRI is clear of anything. I end up screaming and crying from the pain of these spasms, so I can’t understand how it shows my MRI clear of anything. WHen I get the spasms, sometimes I can’t breathe. My lungs feel constricted, I feel dizzy and it’s got really bad at times I can’t speak. I don’t know how to explain it, like last night I was laying in bed trying to relax because I was having spasms in my legs. I was watching tv and all of the sudden my mind went blank, I could see the tv but I mentally couldn’t understand what was being said, i started feeling light headed and I couldn’t breathe very well and when I tried to talk I couldn’t form words. I started getting really choked up and I wanted to scream but I couldn’t, I started getting anxiety. This happens a lot when I get spasms. Sometimes I just blank out for a few seconds to minutes, where I don’t even know where I am or who I’m with and I snap back and I feel sick and like I want to throw up. I don’t know what to do, I’m scared because I don’t understand why the doctors I’ve seen just tell me nothing can be done and this doesn’t seem normal.