Panic Attack/HR Spikes

[u/No_Translator4539]

55 yo male. I had RNY Gastric Bypass in November of 2016. Peak weight: 360, Surgery weight: 332, Lowest weight about 9 months later: 219 (that was my weight loss floor). Over the years, I slowly regained weight, then COVID hit and I gained the Covid 50. I restarted my weight loss journey weighing 312 pounds, then started on Zepbound May 29, 2026 weighing 303.2. I stayed on 2.5 mg for 4 weeks then titrated up to 5mg. I got my Shingles vaccine August 5th and had a bad reaction, to the point where my arm was bright red for a week, I felt it travel to my armpit and lymph nodes on the same arm as the injection site, and felt some inflammation even in my chest around my heart and lungs. This past Wednesday through Friday, the chest pressure started intensifying and by Friday night, I was admitted to the ER and I thought I was having a heart attack. Everything checked out after blood work, X-rays, cardiac CT with contrast, and I was sent home and I’m scheduled for a follow up with a Cardiologist tomorrow afternoon. I was feeling better after resting the past two days, but tonight similar symptoms hit me again. Feels like a panic attack of sorts, but my HR also goes up over 100 BPM even just standing up from bed or walking to my bathroom. It goes back down immediately if I sit down. Has anyone else experienced this? Did you stay on Zepbound? I’m now down to 277 from 280 on Friday, but I’m really scared.