Your symptoms may be related to stress, anxiety, or palpitations, but since you are also experiencing breathing difficulty and a feeling that your heart rate is becoming slow, it is important to get evaluated properly rather than assuming it is only stress-related.
Next Steps
You should get a physical examination done for the following: BP, pulse, ECG, and possibly blood tests such as hemoglobin and
thyroid profile. Try to avoid excess caffeine, energy drinks, smoking, and lack of sleep. Maintain regular meals, hydration, exercise, and stress control.
Health Tips
If you develop severe chest pain, fainting, worsening shortness of breath, bluish discoloration, or persistent very slow/fast heartbeat, seek urgent medical care immediately.”