According to your sign and symptom you are suffering from pressure in head and ear with headache and throat pain .
It can be some side effects of that medicine of anxiety.
Throat pain can due to some viral infection.
Next Steps
You should take consultation for correct diagnosis and treatment.
Health Tips
Please follow good life style as take plenty of fluid and take less spicy and fatty foods and do exercise regularly with yoga and meditation and keep positive attitude to fight any problem of your life.