Heart palpitations and problems with 2nd shot; It felt like somebody was stabbing me in my chest; My beats went from low pressure to high pressure/ beats went from 50 to 150; My big toe and the small ones next to it on my right foot, it feels like somebody stomped on it / they are calling it COVID toe; Arm ached during those 2 weeks; My left arm swelled up; This spontaneous case was reported by a consumer and describes the occurrence of PALPITATIONS (Heart palpitations and problems with 2nd shot), CHEST PAIN (It felt like somebody was stabbing me in my chest), HEART RATE INCREASED (My beats went from low pressure to high pressure/ beats went from 50 to 150), PAIN IN EXTREMITY (My big toe and the small ones next to it on my right foot, it feels like somebody stomped on it / they are calling it COVID toe) and PAIN IN EXTREMITY (Arm ached during those 2 weeks) in a 66-year-old female patient who received mRNA-1273 (Moderna COVID-19 Vaccine) (batch nos. 023M20A and 003B21A) for COVID-19 vaccination. The occurrence of additional non-serious events is detailed below.     Concurrent medical conditions included Spasms. Concomitant products included TIZANIDINE HYDROCHLORIDE (ZANAFLEX) for Spasms, LEVOTHYROXINE SODIUM (SYNTHROID), ATORVASTATIN CALCIUM (LIPITOR), OXYCODONE HYDROCHLORIDE, OXYCODONE TEREPHTHALATE, PARACETAMOL (PERCOCET [OXYCODONE HYDROCHLORIDE;OXYCODONE TEREPHTHALATE;PARACETAMOL]), SALBUTAMOL SULFATE (PROAIR DIGIHALER), MORPHINE SULFATE, POTASSIUM CHLORIDE and AMLODIPINE BESILATE (NORVASC) for an unknown indication.   On 16-Apr-2021, the patient received first dose of mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular) 1 dosage form. On 14-May-2021, received second dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) dosage was changed to 1 dosage form. On 15-May-2021, the patient experienced PAIN IN EXTREMITY (Arm ached during those 2 weeks) and VACCINATION SITE SWELLING (My left arm swelled up). On 16-May-2021, the patient experienced PALPITATIONS (Heart palpitations and problems with 2nd shot), CHEST PAIN (It felt like somebody was stabbing me in my chest), HEART RATE INCREASED (My beats went from low pressure to high pressure/ beats went from 50 to 150) and PAIN IN EXTREMITY (My big toe and the small ones next to it on my right foot, it feels like somebody stomped on it / they are calling it COVID toe). On 30-May-2021, PAIN IN EXTREMITY (Arm ached during those 2 weeks) and VACCINATION SITE SWELLING (My left arm swelled up) had resolved. In October 2021, PAIN IN EXTREMITY (My big toe and the small ones next to it on my right foot, it feels like somebody stomped on it / they are calling it COVID toe) had resolved. At the time of the report, PALPITATIONS (Heart palpitations and problems with 2nd shot), CHEST PAIN (It felt like somebody was stabbing me in my chest) and HEART RATE INCREASED (My beats went from low pressure to high pressure/ beats went from 50 to 150) had not resolved.      DIAGNOSTIC RESULTS (normal ranges are provided in parenthesis if available): On 16-May-2021, Heart rate: 50 to 150 (High) 50 to 150 beats.         Patient did not receive any treatment for adverse event.  The patient had echocardiogram and 24 hour Holter Monitor were performed but results are unknown. A cause has not been determined at this time. She has a Cardiologist appointment on 11-NOV-2021. She stated that she has never had heart problems before receiving the vaccine