Is something else up? Medication?

I’m a 35 y/o male and I had my first episode of AFib on October 10th and I spent a few days in the hospital. They couldn’t find anything wrong and chalked it up to my diagnosis of sleep apnea, being overweight, and not sleeping enough. The put me on Metoprolol and Flecanide. Since then I just really feel like my life hasn’t been the same. Idk if it’s the medication or what but almost everyday something just feels off. I was essentially harassing my cardiologist about not feeling right and it seemed like he wasn’t taking me seriously. I wore a halter monitor for a week and when he looked at the results he said “it’s fine just a lot of PACs.” And he chalked my feelings up to anxiety. I know that this whole thing has caused me a lot of anxiety and I’ve since been prescribed Buspar. It seems to be working but it’s like this cardiac stuff has just taken over my life. It’s all I think about morning, noon, and night. I nearly constantly have that feeling in my stomach like something bad is about to happen. And there’s nearly always an uncomfortable feeling in my chest. I have an Apple Watch and I’m always checking my ecg when I’m feeling a little weird. Almost every time I do it, it picks up PACs. Its picked up AFib twice since I got out of the hospital. The first time it lasted about 15 minutes. More recently I had a bout that lasted about 30 minutes. I took an additional half of Flecanide and it resolved. Idk what’s up yall. Idk if this is something in my head, if it’s my anxiety, if there’s something really going on with me. I just want to be normal again. I’ve got 3 kids under the age of 10. I need to be the best dad I can for them. I’ve got so much riding on this life. Both my parents died of heart attacks before I turned 10 and the thought of doing that to my kids is utterly and debilitatingly terrifying. I’ve changed everything. No shitty food. No caffeine. No nicotine. No THC. Walking miles a day. Sleeping atleast 7 hours a night. I’ve lost 20 pounds. But I can’t get the thought and feelings out of me that I don’t have much time left. It’s eating at me everyday. I’ve seen a new cardiologist and he’s set me up with a CT scan next week and I’ll be putting a monitor on again. Then I meet with the EC after Christmas. Maybe some good news from them will resolve all of this. I’m just so tired of this dominating my life. I want to be my old self again. Thanks for listening yall.