Irregular heartbeat

Dear Doctors,
During the last 4 days I have been experiencing irregular heartbeat. No chest pain, Normal BP and sugar in Blood. I am 52 male very active physically, have not taken allopathy for several years now. My annual medical examination always required me to do a stress test that always came out positive. These irregular hearbeat do occur once in a while but the last 4 days seems to have higher rate of occurance like evey 3o mins or so instead of every few days or weeks. There were also several events occuring in the last 1 week 1) An announcement that I will be moving into a new job soon after 20 yrs with present organisation. This is for family reasons and it happens to be a more stable organisation. All the current employees were sad including myself and I have never felt so sad so intense since I was a kid. I also participated in extreme mountain biking and mountain climbing during the same period. My heart were perfect during these events but irregular heartbeat occur mainly during idling or less active and even upon waking up in the morning. I have tried aconite 6 and Rhustox 30 and arnica 30 that gave temporary relief.
Please advise what new medicine I should take. Thank you.