Hi, I sometimes have some of the symptoms some described below. Rapid heartbeat out of no where  and shortness of breath. Sometimes when I cough it make breathing easier. I can be sitting down, getting up bending down and it just happens out of no where. I know when I was pregnant with my first child, Doctors said I was anemic. Are these symptoms something I should be worried about?
Hello, This can be arrhythmia like PSV or atrial fibrillation, where your heart rate suddenly goes up and BP falls. You will need evaluation like ECG, thyroid test and holder monitoring. You should also get one hemoglobin levels done. So visit nearby cardiologist for this investigation. Also, to abort such episodes you should try to cough hard. Is there any stress or anxiety associated. Till the time your evaluation is complete, you can ask your local doctor for tab collar LA 20 mg once a day. If none of the above is successful then last option is of electrophysiologist studies which is invasive test which can diagnose and treat the arrhythmia permanently in most of the cases. Hope I have answered your query. Let me know if I can assist you further.