I started a treatment with Invisalign but in the first days I had very strong feeling of vomiting and I stopped to wear because I am afraid that it will affect my health.Just now I realised that I signed the contract without giving me opportunity to read this and even I don't have my own copy.I contacted the dental centre this week to send me the copy but they don't want to do this.I worry a lot because I don't know what I signed.My doctor doesn't care what's happening.What can I do?