Hello, In January I Was Diagnosed With A Very Badly

Hello, in January I was diagnosed with a very badly herniated disc in my lower back. I am a 29 year old mother of two, so this was a very inconvenient diagnosis. I was referred to a pain specialist who decided I needed three lumbar steroid epidural spread across a 6 week span. After my first epidural I had a painful lump at the injection site, sleeplessness, anxiety, panic attacks, MIGRAINES, and worst of all terrible debilitating tremors. Initially the pain specialist told me it was a normal reaction to the steroid, and once it was out of my system the symptoms would go away (about two weeks). Well it has been 7 weeks since my last injection and most of the symptoms have subsided except the tremors and migraines. In the morning the tremors are so bad it looks like I am trying to type. My pcp has prescribed me to propranalol and it is working pretty well to keep both the migraines and tremors at bay. However he has now diagnosed me with essential tremor and I have to see a neurologist on Tuesday. Tremors were never something I experienced before my lumbar epidural, and they started the day after my first injection. I only proceeded with the next two because the dr told me they would stop two weeks after my last injection. Now I am being told I have a lifelong tremor disorder that will only get worse over time. My question is how could this have happened, and should I look into a malpractice suit?