Welcome to Health Care Magic and thank you for asking.
In my opinion these palpitations and pains are being generated due to
anxiety. You should not be worried about these symptoms. These are common symptoms and many people go through them.
Anxiety can cause actual pains and palpitations and his is not just your thinking. If anxiety is controlled,the accompained symptoms of palpitations and pains also improve.
If I was your doctor, I will do the following:
1. Examine ear for infection.
2. Get X- ray of neck spine. Your ECG is normal as you told.
3. Search for any specific factor that triggers your anxiety. If specific cause is found,plan desensitization therapy.
4. Advise relaxation and deep breathing exercises.
5. Consider starting anti- anxiety medicines and pain modulators.