Got the Pfizer BioNTech COVID omicron booster shot yesterday... I took J&J.The total was 3 shots; Feeling really bad; I am not feeling good; This is a spontaneous report received from a contactable reporter(s) (Consumer or other non HCP). The reporter is the patient.  A 50-year-old male patient received BNT162b2, BNT162b2 omi ba.4-5 (BNT162B2, BNT162B2 OMI BA.4-5), on 14Oct2022 as dose number unknown, (booster) single (Lot number: GJ5342) at the age of 50 years, in right arm for covid-19 immunisation. The patient's relevant medical history was not reported. Concomitant medication(s) included: LAMICTAL; ZOLOFT. Vaccination history included: covid-19 vaccine (Lot# of First shot (Johnson & Johnson): Consumer stated, "I had 202A-21A on 12Apr2021, that is for the first), administration date: 12Apr2021, when the patient was 49-year-old, for COVID-19 immunization; coviD-19 vaccine (Lot# of Second shot (Johnson & Johnson): Consumer stated, "Second one is 213021A on 20Dec2021 (Clarified as 20Dec2021),), administration date: 20Dec2021, when the patient was 50-year-old, for COVID-19 immunization.  The following information was reported: FEELING ABNORMAL (non-serious) with onset 14Oct2022, outcome "unknown", described as "Feeling really bad"; INTERCHANGE OF VACCINE PRODUCTS (medically significant) with onset 14Oct2022, outcome "unknown", described as "Got the Pfizer BioNTech COVID omicron booster shot yesterday... I took J&J. The total was 3 shots"; MALAISE (non-serious) with onset 14Oct2022, outcome "unknown", described as "I am not feeling good".  Clinical Course: Additional Context: This is the first case out of 2 split cases. Consumer stated, "Me and my mother got the Pfizer BioNTech COVID omicron booster shot (Pfizer BioNTech COVID Bivalent Vaccine) yesterday and we are feeling really bad, we are feeling bad. When probed to clarify if consumer wants to report it or have any medical query, Consumer stated, "I want to report because I am not feeling good. Lot of First shot (Johnson & Johnson): Consumer stated, "I had 202A-21A on 12Apr2021, that is for the first. Lot# of Second shot (Johnson & Johnson): Consumer stated, "Second one is 213021A on 20Dec2021 (Clarified as 20Dec2021). Prior Vaccinations (Within 4 weeks): Consumer stated, "No. Medical Conditions: Consumer stated, "No. Other Medications: Consumer stated, "Yes. The first one is Lamictal (100 milligrams) and the second one is Zoloft (25milligrams). Treatment: Consumer stated, "No, we just got the shots yesterday. Vaccination Facility Details. Consumer stated, "The facility is called Health center. Consumer stated, "Not just that they put it on the card, I don't know. Anatomical site of injection: Consumer stated, "In my arm it was a right arm. On my mothers arm it was her left arm. Reassurance: Consumer stated, "No, my mother shot was also on that same day, I think it was the Dec2021 first shot was the same day. That was my mom's mine was Johnson and Johnson at that time. Consumer was informed about the role of Pfizer Medical Information department for the concern. Consumer stated, "How long the side effects waive off, How long are the side effects. I am asking you how long are the side effects.; Sender's Comments: Linked Report(s) : US-PFIZER INC-202201236374 same reporter/product/AE, different patient;