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Well, there are few causes for these symptoms. These are-
low metabolism rate,
Thyroid hormone imbalance,
Stress and anxiety.
As such first of all you should reduce stress, Practice yoga and meditation to remain relax. avoid alcohol, take adequate sleep.
Blood tests should be done to evaluate the cause. Once the cause is evaluated, you will be advised treatment.
As such my opinion is that you should see Physician for evaluation and management.