What are you eating? I hope you are not eating any dairy or fruit or juice or anything like that. Let me say that palpations were one of the symptoms I used to have. I used to not be able to sleep because my heart would start racing and I would feel wound up and then just have to get out of bed. I found that is was caused by yeast not by healing reaction. I also believe it was due to inadeqate water consumption. In my opinion when the heart starts pounding , the little yeasties want something. I found that if when the heart racing started I would drink a little milk and it would go away. That tells me that the yeast wanted something and I pacified them. Of course you would not want to do this. But it proves my point. Also, it can be caused by toxin buid up and dehydration. Did you have enough water? Was your urine dark yellow? Also are you taking vitamins because you might need Calcium, magnesium and potassium which would help greatly with the heart pounding. Anyway to clarify, my heart would feel as if I ran ab out 1 mile up hill and I could not get it to slow down. Is that how your feels? If so, when this happens give yourself a cold compress and drink a ice cold glass of water and do not allow yourself to breath rapidly. You can calm down your breathing and your heart rate. Go into a quiet room where you will not be disturbed and focus on breathing slowly , slwo deep breath slow in and slow out. Sometimes I find that pacing very slowly, and concentrating on breathing slowly and I could get my hear to to stop.
There is a good possibility your are eating something you should not be eating. A pounding heart can be a reaction to caffeine, eating something wrong or especially something moldy like leftovers. And by the way many nuts are notoriously moldy. So if I were you you need to think about what it is you have done in the last 3 days to a week differently. Have you added anything to the diet recently. Have you been eating nuts, dairy etc. Have you been taking vitamins etc.