Almost feels like it speeds up for a couple beats or skips a beat, nothing particularly interesting or exciting is going on at the time either. This has been going on for years by the way I am wondering if it's anything bad.
Also sometimes when I am about to take a deep breath it feels like my rib caught onto my lung or something so I have to exhale, and inhale very slowly to get it "unstuck". I really don't know what is going on there or if it is a rib or what but it hurts like hell. Or I have to lift my arms up and inhale slowly.
Your heart has irregular pulse as valves such as tricuspid valve or mitral valve are not functioning properly making murmur. There could be other issues, too.
According to statements, you might have dysfunction of lung and kidney. Difficulty of inhale comes from kidney function and exhale from lung. There are good herbs which can be treated for your symptoms. When you get acupuncture treatment with herbs, you would get better and faster results. Try to find local acupuncture clinic.