Hello Doctor, Im An 18 Year Old Boy. I Exercise

Hello doctor, im an 18 year old boy. I exercise regulary and have been exercesing for a year now. I didn't have any problems during exercises until this month. I had a panic attack and after that i've been experiencing heart palpitations even if i try to do a simple exercise. I'm a very anxious person by the way and have been anxious about my health since i had that panic attack. Could this be anxiety or should i see a doctor. Your response would be much apprechiated..