My 19 Year Old Daughter Was Told To Where A

My 19 year old daughter was told to where a heart monitor for a 24 hour period. During the night it beeped. She was asked to where it as doctor was concerned about symptoms she's been having such as sharp pain on left side of chest, tingling and numbness in fingers, tired, nauseous and vision blurring. Lately under her eyes is looking dark.. Should we be concerned about anything heart related? She's not overweight and is a petite build