Dawn,
Chest pain is tricky business. It can be extremely difficult for even cardiologists and internists, the two types of specialties that see the most chest pain patients, to determine what is causing the pain.
EsophagealEsophageal atresia
Esophageal cancer
Esophageal culture
Esophageal perforation
Esophageal tissue culture
Gastroesophageal reflux disease
Gastroesophageal reflux in infants
Tracheoesophageal fistula repair - series spasmsCoronary artery spasm
Croup
Eyelid twitch
Facial tics
Hand or foot spasms
Urge incontinence
Vascular spasm certainly can cause chest pain. While I have on occasion thought that a person's pain came from these spasms, I have never given someone that diagnosis in the ER. To correctly make that diagnosis requires a test called esophageal manometry, where a person swallows a probe that measures the pressures in the esophagus. If this was the test you had before the diagnosis was made, then the diagnosis is believable. Otherwise, the diagnosis was made solely based on the ER clinician's best judgement.
Heart monitors only show the rate and rhythm of the electrical activity of the heart. Usually when someone feels pain and hears a "beep", it's merely coincidence. Other times the beeps are caused by in iv finishing, a lead falling off your skin, a pulse oximeter falling off, etc. On occasion, some people will experience premature beats (which are generally harmless) as painful. These premature beats will sometimes trigger a "beep". Nothing on the heart monitor would allow the doctor to diagnose esophageal spasms.
I would recommend that you make an appointment to see your internist. Try www.acponline.org or doctorsforadults.com to find a board-certified internist in your area.
Hope that helps.