Felt ill; Injection site burned; Felt faint; I had excessive bleeding and exceedingly erratic cycles for months.; I had excessive bleeding and exceedingly erratic cycles for months.; I have sensitive hormones, and ended up with several yeast infections due to that, and hurt for months.; Dose 1: 21Apr2021; dose 2: 05May2021; This is a spontaneous report from a contactable reporter (Consumer or other HCP). The reporter is the patient.  A 23 year-old female patient (not pregnant) received bnt162b2 (BNT162B2), administered in arm left, administration date 05May2021 (Lot number: EW0168) at the age of 23 years as dose 2, single for COVID-19 immunisation. Relevant medical history included: "Hormone level NOS abnormal" (unspecified if ongoing), notes: hormonal issues and "Ovarian cyst" (unspecified if ongoing), notes: prone to ovarian cysts. Concomitant medication included: AZO COMPLETE FEMININE BALANCE. Vaccination history included: Bnt162b2 (DOSE 1, SINGLE, Lot Number: ER8736, Anatomical Location: Left arm, Route of administration: Unspecified), administration date: 21Apr2021, when the patient was 23 years old, for COVID-19 immunisation.  The following information was reported: INAPPROPRIATE SCHEDULE OF PRODUCT ADMINISTRATION (non-serious) with onset 05May2021, outcome "unknown", described as "Dose 1: 21Apr2021; dose 2: 05May2021"; MALAISE (non-serious) with onset 30May2021, outcome "recovered" (an unknown date in 2021), described as "Felt ill"; VACCINATION SITE PAIN (non-serious) with onset 30May2021, outcome "recovered" (an unknown date in 2021), described as "Injection site burned"; DIZZINESS (non-serious) with onset 30May2021, outcome "recovered" (an unknown date in 2021), described as "Felt faint"; HEAVY MENSTRUAL BLEEDING (non-serious), MENSTRUATION IRREGULAR (non-serious), FUNGAL INFECTION (non-serious) all with onset 30May2021, outcome "recovered" (an unknown date in 2021), and all described as "I had excessive bleeding and exceedingly erratic cycles for months". The events "Felt ill", "Injection site burned", "Felt faint", "I had excessive bleeding and exceedingly erratic cycles for months." and "I have sensitive hormones, and ended up with several yeast infections due to that, and hurt for months." were evaluated at the physician office visit. Therapeutic measures were taken as a result of malaise, vaccination site pain, dizziness, heavy menstrual bleeding, menstruation irregular and fungal infection. Additional information: The patient had no known allergies. The patient did not receive any other vaccines within four weeks prior to the COVID-19 vaccine. Prior to vaccination, the patient was not diagnosed with COVID-19. The patient reported that she waited this long to report the side effects because of the more difficult effect. She was only told after that there might be only some mensural bleeding. She had excessive bleeding and exceedingly erratic cycles for months. She had sensitive hormones and ended up with several yeast infections due to that and hurt for months. It was only after talking to other women and did more research that she saw the woman specific side effects. If she was told that her hormones would be thrown off, she would not have gotten the shot. The patient did not even know why it was happening when she went to the doctor and she felt like she had messed up, or something far worse was going on. The only major change that occurred was getting the shot. The patient reported there was a lot learned from that visit, but it just sucked that she was there in the first place. It was awful for months. Since the vaccination, the patient had been tested for COVID-19. The events resulted in doctor or other healthcare professional office/clinic visit and emergency room/department or urgent care.