I have severe headaches every so often. I have one right now... and laying here on the couch, my heart felt like it was beating so hard it could pop out of my sternum. I do not get these hard heart beats everytime I have a headache; but when I do get them, I already have a headache (as today). My husband checked my pulse...78... so I wonder if it is SVT?
Hi, Regarding your concern, I would explain that it is necessary performing a prolonged ambulatory ECG Holder monitoring in order to examine your heart rhythm trends for a prolonged time in order to examine the type of arrhythmia.  I would also recommend performing some blood lab tests (complete blood count for anemia, thyroid hormone levels for thyroid gland dysfunction, blood electrolytes for possible imbalance). You should discuss with your doctor on the above tests.  Hope I have answered your query. Let me know if I can assist you further.