The rapid heart beat is a symptom I experienced and others experienced while on the diet; it is a die-off symptom. It should improve in time as you kill more and more of the yeast. I used to get bad heart palpitations as well. Acupuncture is one thing you can do that can help your body detox better.
You may consider consulting a naturopath who can heal you holistically. Have you tried SF722, HMF neuro, and healing the liver? These are some of the tools a naturoapthic doctor can use to heal you and are the cornerstones of my treatment.
We developed a forum protocol that has a strict food list that is very different than the websites food list which promotes things such as beef, pork, rice, corn, potatoes, etc…all of which can set back your progress. Beef and pork take days to digest while chicken and fish take hours. Corn, rice, potatoes, and carrots are all high in starch and sugars which can feed the candida quite easily.