chills; headache; feeling sore in her arm; tiredness; she was also breastfeeding; she was also breastfeeding; itching/itching was worse on her chest and back/allergy like a reddish thing, an itching thing was on her body, on her chest area, her breast area; was breastfeeding; it was full of milk that also hurts very bad; allergy like a reddish thing, an itching thing was on her body, on her chest area, her breast area; on her back as well; allergy like a reddish thing, an itching thing was on her body, on her chest area, her breast area; on her back as well; feeling unwell; This is a spontaneous report from a contactable consumer (patient). This consumer reported information for both mother and baby. This is the maternal report. A 44-year-old female patient received second dose of BNT162B2 (PFIZER-BIONTECH COVID-19 VACCINE, solution for injection) via unspecified route of administration on 21Jan2021 (lot number and expiry date unknown) at single dose for Covid-19 immunization. The patient stated "just to protect myself". Medical history included blood pressure high, lost weight because she was breastfeeding now (ongoing). Concomitant medication included labetalol from unspecified date for blood pressure high, and blood pressure medicine. Historical vaccine included first dose of BNT162B2 on 31Dec2020 for Covid-19 immunization and experienced allergy. The patient informed that she already reported to a pharmacist. The female patient received the second dose of the COVID vaccine on Thursday (21Jan2021). The patient informed that she was fine the same day she received the vaccine and had some itching (21Jan2021), but the next day (22Jan2021) she had a headache and was feeling sore in her arm. The patient experienced a little bit sore in her arm, bad sore on her arm; after she had the first one maybe after a day, but it was not that bad. The patient informed that she received the covid vaccine on Thursday (21Jan2021) and has been feeling unwell ever since (Jan2021). The first day it was okay, she meant a little bit sore in her arm, her sore arm. On Friday (22Jan2021), she started like having tiredness, headache, and sore like bad sore on her arm. Then now she has seen, she said it was okay then she knew because there was a side effect so she tried to take rest and drink water. What happened was, now (Jan2021) on her body it looked like some kind of allergy like a reddish thing, an itching thing was on her body, on her chest area, her breast area and she was a breastfeeding mom and on her back as well. The patient informed that after 3rd day (Jan2021) it got like especially on her breast area and her chest area got like itchy. Today (24Jan2021), the headache came back, and she was experiencing chills and her itching was worse on her chest and back. The patient informed that she was also breastfeeding. The patient wanted to know what she was supposed to do. The patient informed that she has headache, the headache was back today, now when she woke up, she has headache. The patient was asking for guidance if she was breastfeeding and has received the second dose of the COVID vaccine. The patient informed that she was to feed her son, because she didn't feed him yesterday, so it was full of milk that also hurts very bad. The patient was scared, because it was itchy area on her breast, so she was scared to breastfeed her son. The patient informed that it was like back and forth, but now this morning (Jan2021) the patient has headache, yesterday (Jan2021) she was okay. The patient informed that about her treatment, she didn't take even a painkiller; she just only took her blood pressure medicine. The outcome of the event headache was not recovered, while itching/itching was worse on her chest and back/allergy like a reddish thing, an itching thing was on her body, on her chest area, her breast area, feeling sore in her arm, feeling unwell, tiredness, allergy like a reddish thing, an itching thing was on her body, on her chest area, her breast area; on her back as well, chills, was breastfeeding; it was full of milk that also hurts very bad was unknown.  Follow-up activities are possible, information on the batch number has been requested.; Sender's Comments: Linked Report(s) : US-PFIZER INC-2021092765 baby case