"i am nervous to go hardcore into chelation, just eating sulphur foods makes my head throb so i plan on following the clues my body gives on what is right for me. "

Detoxification causes discomfort though, and some people make the mistake of avoiding supplements or foods that help them detox since these make them feel uncomfortable. Taking molybdenum supplements(perhaps 500 mcg a day?) might help you tolerate sulphur foods better.