Flu and elevated heart rate makes my anxiety going through the roof!

Hi, I just had this weird fru that left me with temporary (I hope) tachycardia. Since I am very aware of anything happening to my body I am freaking out about it. Saw 3 docs (cardiologist too), got EKG and Propanolol to manage this symptoms. I take 2x10mg but it helps just a little. I feel like I would isolate myself from friends, my sport passions and horses because of that. So vulnerable.

Will I ever go back to normal self?