This is an important time for you since they just started. You can put them to rest quickly. Read about panic attacks. I love the books: "Panic Attacks Workbook" by Dr. Dave Carbonell and "Hope and Help For Your Nerves" by Dr. Alice Weekes.
im 21 years old. and my first panic attack happened while i was in a movie theatre watching "Get Out" i had the same symptoms. Fast heartbeat, chest tightness and discomfort, and trouble breathing. I had no idea what was going on and that is what scared me. I researched a lot and did a lot. it happened in march 2017. its june now and i still have the ocassional panic attack but they are further apart and last shorter times. Use AWARE technique
A- Accept the panic for what it is, discomfort not danger.
W- Wait and Watch (Hard as this may sound, let the panic flow through you. Do not fight it or leave the situation, let it flow through you and say what you are thinking " my heart it racing " "im sweating" watch your symptoms
A- Actions ( try belly breathing to relax and let your muscles go LIMP. tensed muscles is a way your trying to fight the attack, remember the less you fight or flight from the panic, the better off you are.
R- Repeat those steps.
E- End. Remember all panic attacks end and cause no actual damage other than fear and discomfort. not danger.