menstrual irregularities-delay/early-indicates these irregularities happened after receiving each vaccine and is occurring now; Got Covid in early April 2023/migraines/diminished smell continues/fatigue/nausea/joint pains/burning sensation legs/arms/muscle pains/dizziness/blurry vision/fainted in shower/loss of appetite; This spontaneous case was reported by a non-health professional and describes the occurrence of MENSTRUATION IRREGULAR (menstrual irregularities-delay/early-indicates these irregularities happened after receiving each vaccine and is occurring now) and POST-ACUTE COVID-19 SYNDROME (Got Covid in early April 2023/migraines/diminished smell continues/fatigue/nausea/joint pains/burning sensation legs/arms/muscle pains/dizziness/blurry vision/fainted in shower/loss of appetite) in a female patient of an unknown age who received mRNA-1273 (Moderna COVID-19 Vaccine) for COVID-19 prophylaxis.    Co-suspect product included non-company product TOZINAMERAN (PFIZER BIONTECH COVID-19 VACCINE) for COVID-19 vaccination.    Prior to the vaccination, the patient was not diagnosed with COVID-19 previously. It was unknown if the patient received any other vaccines within 4 weeks prior to the COVID-19 vaccine or not.  The patient's past medical history included Varicose veins (severe varicose veins with treatment). Concurrent medical conditions included Endometriosis and Bell's palsy.   On 23-Jul-2022, the patient received fourth dose of TOZINAMERAN (PFIZER BIONTECH COVID-19 VACCINE) (unknown route) 1 dosage form. On an unknown date, the patient received third dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) 1 dosage form. On an unknown date, received second dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) dosage was changed to 1 dosage form and first dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) dosage was changed to 1 dosage form. In April 2023, the patient experienced POST-ACUTE COVID-19 SYNDROME (Got Covid in early April 2023/migraines/diminished smell continues/fatigue/nausea/joint pains/burning sensation legs/arms/muscle pains/dizziness/blurry vision/fainted in shower/loss of appetite). On an unknown date, the patient experienced MENSTRUATION IRREGULAR (menstrual irregularities-delay/early-indicates these irregularities happened after receiving each vaccine and is occurring now). At the time of the report, MENSTRUATION IRREGULAR (menstrual irregularities-delay/early-indicates these irregularities happened after receiving each vaccine and is occurring now) had not resolved and POST-ACUTE COVID-19 SYNDROME (Got Covid in early April 2023/migraines/diminished smell continues/fatigue/nausea/joint pains/burning sensation legs/arms/muscle pains/dizziness/blurry vision/fainted in shower/loss of appetite) outcome was unknown.      DIAGNOSTIC RESULTS (normal ranges are provided in parenthesis if available): In April 2023, SARS-CoV-2 test: Positive.         No concomitant medication information was provided.   It was reported that the patient had received fourth dose (second booster) of Pfizer vaccine on 23-Jul-2022 with lot number FJ4991.  At the time of reporting, the patient felt like she might have long-Covid symptoms as the patient was experiencing migraines, diminished smell continued, fatigue, nausea, joint pains, burning sensation in legs/arms, muscle pains, dizziness/blurry vision, fainted in shower, loss of appetite and menstrual irregularities-delay/early. The patient indicated that these irregularities happened after receiving each vaccine and were occurring at the time of reporting as well. Patient was seeking medical care from primary physician.  Treatment medication information was not provided.