I've been dealing with anxiety for a while so I get chest pains, dizziness, and other "typical" symptoms but have a question about something else. Whenever I do something physical I get dizzy after. For example I mowed the lawn and only felt a little dizzy (wasn't working that hard) but after I felt pretty dizzy and a little sick. I also got a stress test about a week ago did fine but it took me a long time to recover. Again I felt dizzy and a little sick. I also felt out of it for the rest of the day. It's also common for me to get dizzy when standing up and the doctor said my blood pressure was dropping from sitting to standing.

Does any of this sound familiar? I don't even know if it's my heart. Any help would be appreciated.