Whenever I attempt an OBE, as soon as I get to the rushing noises, my heart beats really loud and fast and feels really intense and uncomfortable, like it’s trying to rip from my chest. It’s incredibley hard to endure, and I have to come out of the trance to stop it.
Has anyone else got this? Does anyone know how to get rid of it?
Well, if it bothers you, you should find something else to focus on, a reasonable option would be the ringing in your ears, or the other noises you’re listening to. Since your heart is really staying there, distracting from it should be enough to reduce its influence. Good luck 
Is this also what people call the vibrational stage? It doesn’t actually feel like vibrating, just feels like energy, almost heat energy that’s like charging through my body. I also hear noises like at the end of a yawn, that rumbling rushing noise in the back of your ears.
How are you breathing? My meditative breathing used to be 4-counts equally of inhaing, holding, exhaling, and holding, but that used to give me palpitations. I found it much more calming to exhale for a count of six and hold for a count of two.
If it’s nothing physical, as in you can feel your heart beating slow and steadily but also feel …something where you’re heart’s supposed to be, that’s behaving like you’re heart’s not behaving? I say just ride it out.