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From your histry it seems you are having some problem or issue that is disturbing you mentally resulting in palpitations and nervousness
Excessive urinationis seen in cases of infection,diabetes
and mental stress
which is more likely in your case.
I would suggest you too get over the mental stress or the problem that is bothering you and if needed consult a doctor and he will prescribe you medicine to relieve your anxiety.
Hoep that answers your concern.