I have had palpitations but not as severe as yours. I wore a holter monitor while I was doing daycare. I just wore a big baggy long shirt. No one knew I had it on. You can goggle it and see what it looks like. As I recall it was only a day or two that I wore it but I forget. Now the palpitations are controlled by medicine. No biggie really although it is stressful just to have the palpitations. It will be okay.
The doctor told me no caffeine or chocolate. You might want to not have those until you find out more. Don't worry you can have other sweets.
Also, get enough sleep. I find being over tired and over stressed can bring them on. Not so much anymore but without meds.
Laurel