It feels exactly the same as when your stomach sinks, I just feel it in my boobs instead. It’s only started happening within the past week, it’s not painful and it’s not chest pain. I’ve recently been prescribed Propranolol for my heart, it slows the heart rate sure but doesn’t seem to solve this weird boob issue. It doesn’t hurt but it’s not a pleasant feeling and it’s happening quite a lot, which in result, is making my anxiety 100x worse.