I've been struggling for two years now with constant mild chest tension that builds into full-on pain/cramps/twitching when I sit down for extended periods of time. Driving, flying, and dinners are the absolute worst triggers. I become restless and feel like I need to stand up and stretch out. The pain emanates from two spots: between my left armpit and pec, and between the ribs below my left nipple. I have GAD and the tightness is drastically worsened by anxiety, but it often occurs when I'm relatively at ease. My doctor won't refer me to a cardiologist because the pain improves with exercise and changing position, which is apparently atypical of heart ailments. It feels like a squeezing, swelling sensation between my armpit and pec, and a sharp pain below my nipple. I'm on lots of anxiety meds (Lexapro, Buspar, Gabapentin, Propranolol) but they don't seem to help at all. Even when I take Ativan the pain remains. I also do yoga and meditation, don't consume sugar, alcohol or caffeine––I feel like I'm doing everything right but the pain in my chest has remained steadfast. Anyone have any ideas?

Any help would be greatly appreciated. So much of the world is built around sitting, it's really isolating to only feel comfortable standing and moving about. I'm a student and have been alright doing virtual classes from my standing desk, but I'm beyond nervous to return to in-person (seated) classes.