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We understand your concerns
Good description. People eat strange things because there is a deficiency. Eg are mud, sand, kerosene etc. Pencil contains lead which is a poison and avoid eating it. Pain in soles of both feet could be due to bruises, twitches, urea deposit or weight gain etc, Your doctor is capable enough to find it and treat it. Nausea
while suddenly getting up is nomal and BP 60/90 is also normal if you have not any other medical conditions. Therefore don't worry about these things and concentrate of LIFE and live it HAPPILY.