I’m not even going to try to answer an ask about suffering chest pain. I’m sorry, but the only opinion you need to be getting is a DOCTOR’S.
You don’t have to tell them it happens while you’re tortuously jerking off after ruining orgasms, just say ‘physical exertion’, although they’d be fascinated with the truth, and you do have confidentiality so it might be kinda fun…
‘And when exactly does this happen, Ms Constellations?’
‘Well doctor, have you heard of post orgasm torture?’
‘No, what’s that?!’
‘Let me show you this blog I love…’

People are free to add their own notes and maybe you’ll learn something from that but with loving respect to my followers I’d rather take medical advice from a mystic monkey than get it from Tumblr.