Stomach ache; Severe breast pain; I'm very tired still; She can't remember anything; Lethargic; Weakness; This is a spontaneous report from a contactable consumer or other non hcp (patient). A 63-year-old female patient received first dose of BNT162B2 (PFIZER-BIONTECH COVID-19 VACCINE, formulation: solution for injection, Lot number: ER8730 and Expiration date: Jul2021), via an unspecified route of administration in left arm on 29Mar2021 (age at vaccination 62-year-old) at 1st dose single dose for covid-19 immunisation. Patient Medical history included covid-19 from Nov2020 to an unknown date, tachycardia from Nov2020 and ongoing, postural orthostatic tachycardia syndrome from Nov2020 and ongoing, Brain fog from Nov2020 and ongoing. The patient's concomitant medications were not reported. Patient got Covid-19 infection on Nov2020. She said that she was a long hauler which means that she still has POTS (Postural Orthostatic Tachycardia Syndrome) and brain fog from COVID-19. She said that she has antibodies. Patient reported that she had been reading a lot of stuff and queried if it was ok for her to have gotten the Covid-19 vaccine after having Covid-19 in Nov2020. Patient inquired after being informed that she would be transferred Mortgage Insurers (MI) for her questions if she should wait to ask the other questions that she had as they were all medically related. agent offered to relay her questions to MI if a live agent was reached but Patient did not provide other questions. Patient reported that she had her first dose of the Covid-19 vaccine about an hour ago. Lot Number: Patient reported that she was pretty sure the lot number was ER8730 but stated that it could possibly be ERS730 as the 8 looked a bit like an S. Patient asked that why she still having these symptoms 2 weeks out after the vaccine. She had a stomach-ache and severe breast pain (the left side where I got the vaccine). It radiates into her left breast. When she leans over, it was severe to where she cannot touch her breast. The pain goes away, but it was random. She was very tired still. Patient asked that should she get the second dose. agents were busy during attempt to warm transfer. Thus, Adverse event E-transmitted. responded per CONS documents and provided disclaimer that Pfizer is unable to make recommendations for individual patients. Patient was asking if she has to start the series all over again if her second dose is delayed. Response: Responded per CONS document. Again, RN called as patient said that she called last week about the Pfizer COVID-19 vaccine that she took the first dose of on March 29th. She says she called today to provide more information, and to ask a question. She says after she took the first dose of the vaccine on the 29th she was still very tired, and her breast pain was worse. She says she has never had breast pain before, it was on the same side where she got the vaccine in her arm. She said her arm did not hurt, which she wondered about, but it went down into her breast lymph nodes, and her breast was hurting when she pushes it forward, she sits up or bends forward. She said it was hurtling so bad, and she was very tired, she does not know why it was taking two weeks. She said she was also still having brain fog. Patient said she cannot remember what she provided previously on her other report, she cannot remember anything. Patient said she had COVID in November2020 and now she had the vaccine and still can't get over it. Patient said that when she holds her breast forward, she feels the pain. She said she was very lethargic, and she had a stomach-ache until 28Mar2021 (yesterday) when she decided to drink Gatorade. She said she drank two bottles and the stomach-ache seemed to ease up. She said that the breast pain was frightening to her, it was a real sharp pain that was so bad that afterwards she can't touch until 5 seconds later. Patient says she wanted to know if she can still get her second dose in ten days and says that she doesn't know what the second dose will do to her if after the first dose it has taken two weeks to recover. Patient also mentioned that she had COVID-19 last Nov2020 and had tachycardia ever since. Patient received the first dose of the Pfizer-BioNTech COVID-19 Vaccine by the end of Mar2021 and had a bad Case narrative reaction (tachycardia, weakness, & fatigue). Patient is scheduled to receive the second dose on 26Apr2021. Patient asked that will she overdose (od) of antibodies. Patient already reported to Safety and confirmed. Checked the Pfizer-BioNTech COVID-19 EUA PI (LAB-1457-7.0, Revised: 06 rApr2021), mentioned no information found on possible antibody overdose, discussed Immunization Practices (IP) recommendation, gave disclaimers, and referred to health care professional (HCP) for guidance. The outcome of event was unknown.  No follow-up attempts are needed; information about lot/batch number cannot be obtained. .