Please check inside if you activated bartonella that is one of the most common infections that gets activate.
There are many infections that will be activated.Bartonella , neurolyme , babesia , ricketsia , parasites etc.You need to treat them in order .Start with parasite first and liver flushes.But be careful as you want to chelate but you will get worst if you have any of the tick borne illneses in your system.
As you use ALA you are activating infections that are present in the brain.They will be released and make you feel worst.I will highly recomend you to be informed.Read: http://www.personalconsult.com/free/WYNMK-Abridged-l.pdf
You need to have a clear liver from parasites before you try to chelate.
search other articles in this two sites.You will find that you you need a Lyme disease doctor that can help you.Be careful as you do not need to pull mercury and release this infections that will be activated .You need a doctor to find out what else is going in your system .