Lyrica - almost instant side effects

Unnoticed steady worsening symptoms aftet starting this do nerve pain. First night I had sweats and felt like someone shot me with adrenaline. Symptoms worse over a few days with a little ataxia am weak legs. Went off completely 12 days ago and overall improved but still having days where it feels like I’m having a bad mushroom trip. Anyone else have a strong immediate megadose reaction and how long did it take to normalize.