Is cbd oil vape worth it?

So i have alot of nerve pain between my neck and lower spine plus i have really really bad anxiety ive tried all kinds of things and i finally decided to cbd vape since its the only thing i can find where i live it really havent seemed to do much but its also only 100mg so my questions are;
1. If you have tried it for nerve pain? If so did it work ? How long did it take and what mg did you try?
2.If you have tried it for depression/anxiety? If so did it work ? How long did it take and what mg did you try?
3.did you notice it helped anything?
4. Did you have any negative side effects? If so what