I am saying I feel it activated the dormant issue in my system and added triple positive; Hormones went wild; Emotional; This is a spontaneous report received from contactable reporter(s) (Consumer or other non HCP). The reporter is the patient.  A 47-year-old female patient (not pregnant) received BNT162b2 (BNT162B2), on 14Jul2021 at 17:00 as dose 2, single (Lot number: FA6780) at the age of 47 years, in left arm for covid-19 immunisation; diphtheria vaccine toxoid, pertussis vaccine acellular 3-component, tetanus vaccine toxoid (BOOSTRIX), on 09Jun2021 as dose number unknown, single (Lot number: 7sy34), in left arm. The patient's relevant medical history included: "Hypothyroidism" (unspecified if ongoing), notes: Other medical history: Hypothyroidism obese; "obese" (unspecified if ongoing), notes: Other medical history: Hypothyroidism obese. Concomitant medication(s) included: SYNTHROID. Past drug history included: Hydrocodone, reaction(s): "Known allergies: Hydrocodone". Vaccination history included: BNT162b2 (Dose Number: 1, Batch/Lot No: EW0196, Location of injection: Arm Left, Vaccine Administration Time: 05:00 PM), administration date: 23Jun2021, when the patient was 47-year-old, for covid-19 immunization. The following information was reported: EMOTIONAL DISORDER (disability) with onset 12Aug2021, outcome "not recovered", described as "Emotional"; ENDOCRINE DISORDER (disability) with onset 12Aug2021, outcome "not recovered", described as "Hormones went wild"; INVASIVE DUCTAL BREAST CARCINOMA (disability) with onset 12Aug2021, outcome "not recovered", described as "I am saying I feel it activated the dormant issue in my system and added triple positive". The events "i am saying i feel it activated the dormant issue in my system and added triple positive", "hormones went wild" and "emotional" required physician office visit. The patient underwent the following laboratory tests and procedures: Biopsy: Unknown Results; Invasive ductile carcinoma: Triple positive, notes: Invasive ductile carcinoma triple positive; All was clear, notes: Went to ob dr and she checked the ovaries uterus cervix and ran labs and said all was clear but I continued to have cycle; Mammogram: there was the lump, notes: Finally my annual mammogram came to be and there was the lump; SARS-CoV-2 test: Negative, notes: covid test name post vaccination= I donate blood and they test it. Several occasions. Therapeutic measures were taken as a result of invasive ductal breast carcinoma, endocrine disorder, emotional disorder.  Addition information: The patient received the third dose of BNT162B2 (lot number: FJ6369) on 24Jan2022 at 12:30 PM on the Left arm. Invasive ductile carcinoma triple positive, started menstruation after over 10 years not having one. Hormones went wild. Emotional. Went to ob dr and she checked the ovaries uterus cervix and ran labs and said all was clear but I continued to have cycle. Finally my annual mammogram came to be and there was the lump. I have IDC in family but my mom was the youngest at 76 to be diagnosed. Not saying the vaccine gave me cancer. I am saying I feel it activated the dormant issue in my system and added triple positive. So what I could have had in my 70s or 80s, came to be at 48. Covid prior vaccination was none.