Most of my anxiety was centered around my heart as well with fear of having a heart problem, of course every time I went to the doctors or ER everything was fine.
Physical symptoms aren't easy to overlook but a lot of times there are other causes. Sometimes my chest/rib area got sore from laying weird or sitting in a position for awhile and I sit up or stretch and get pain. I think its my heart but it isn't.
I never took any meds for my anxiety so I can't help you there but is there anything else going on that's stressing you out? I know its a really common question but honestly its what it comes down to. What is bothering you the most? Are you worried about something?
Reflect on your life for a minute and sort it out. PM me if you want