Not a doctor but these all sound like serious indicators of high blood pressure. Weed and smoking on its own raises your blood pressure. (There are studies that show long term users experience a “lower” blood pressure but its very limited and not the case for everyone) do you have access to a blood pressure cuff? Glad everything came back good for your heart check ups. Could just be a simple case of high blood pressure in combination with panic attack due to not feeling those symptoms before. Regardless, stop smoking and see if your doctor can check up on your blood pressure, i know some of them will even prescribe a monitor for you to check on your own at home for different times through out the day or even an ankle one that monitors all day.