I've been vaping since 2010 and haven't had an actual cigarette in ten years. I have never had a single health concern until late June. I started waking up with light chest and back pain and when lying down before bed, I would experience the type of palpitations where it feels like your heart skipped a beat and gives you a brief little shock. I have a blood pressure monitor at home and every time I checked, I was at or near 105/70. I went in for a check up which consisted of a covid test (neg) and an ekg and nothing was showing up as irregular. I have been using the same setup for at least the past five years, A Sigilei 100w box mod at home with aspire Triton, and an istick 40w with a kanger mini when I leave the house. I use 50/50 pg/vg and never more than 3g nicotine (for a lot of flavors I order 0). I just took two days off completely from vaping and all of the symptoms are gone. I'm wondering if anyone else has had a similar experience? I've been trying to locate a variable I may have missed but I can't come up with anything and I'd really hate to give up vaping. It seems strange to me that I could go ten years without a single issue and all of a sudden my body is saying no.