I'm experiencing this weird issue where my heart starts to palpitate really fast, and every time I take a breath, it feels like I can actually feel the blood pumping. Then, out of nowhere, I'll get a nosebleed. When this happens, I'm scared to do anything physically demanding because I'm worried the bleeding might get worse. Could you let me know which kind of doctor I should see about this?

Visit Physician for evaluation,do not neglect and avoid excess physical activities