experienced being positive for COVID-19 in between the first and second dose; experienced being positive for COVID-19 in between the first and second dose; bacterial pneumonia/ cough /slight burning in her throat.; This is a spontaneous report from a contactable consumer or other non hcp. A 58-years-old female patient received First dose of BNT162B2 (PFIZER-BIONTECH COVID-19 VACCINE, Solution for injection) via an unspecified route of administration, administered in Arm Left on 25Mar2021 15:30 (Batch/Lot Number: ER8727) as single dose for covid-19 immunisation.  Medical history included ongoing hypothyroidism Verbatim: Hypothyroidism/diagnosed years ago , ongoing obesity Verbatim: Obesity/Additional Information for Other Conditions: diagnosed years ago , gastrooesophageal reflux, hormone therapy, weight decreased, supplementation therapy. Concomitant medication(s) included thyroid (ARMOUR THYROID) taken for hypothyroidism, omeprazole (OMEPRAZOLE) taken for gastrooesophageal reflux disease, topiramate (TOPIRAMATE) taken for weight decreased metformin (METFORMIN), estradiol (ESTRADIOL) taken for hormone therapy; progesterone (PROGESTERONE) taken for hormone therapy, ergocalciferol (VIT D) taken for supplementation therapy, iron (IRON) taken for supplementation therapy; methylcellulose (METHYLCELLULOSE) taken for supplementation therapy, chondroitin sulfate sodium, glucosamine hydrochloride (GLUCOSAMINE CHONDROITIN [CHONDROITIN SULFATE SODIUM;GLUCOSAMINE HYDROCHLORIDE]) taken for supplementation therapy. The patient underwent lab tests and procedures which included blood test result was unknown on 30Mar2021, chest x-ray result was clear, chest x-ray result was bilateral pneumonia on 02Apr2021, chest x-ray result was unknown on Apr2021, chest x-ray result was pneumonia on 16Apr2021, sars-cov-2 test result was negative on 03Apr2021, sars-cov-2 test result was unknown results on 07Apr2021, sars-cov-2 test result was unknown results on 09Apr2021, sars-cov-2 test result was positive on Apr2021. The reporter wanted to know if she could receive the Pfizer COVID-19 vaccine while being on the medication erythromycin. Caller is a female consumer who states that her family doctor wanted her to call Pfizer for further clarification on whether or not to proceed with the second dose of Pfizer COVID-19 vaccine on her scheduled appointment date of this Thursday 22Apr2021. She stated on 22Mar2021 she started having symptoms that she thought was allergies which included a cough and slight burning in her throat. She received her first dose of the Pfizer COVID-19 vaccine on 25Mar2021. She was diagnosed with bilateral pneumonia, secondary to an unknown COVID-19 infection, on 02Apr2021. She states that she was told that she had COVID-19 prior to her first dose of the vaccine but she did not realize it. She has since been treated for pneumonia and has been medically cleared. Her chest X-ray is clear. She was treated with antibiotics and will be taking her last dose of erythromycin on Thursday 22Apr2021. She wanted to know if she can proceed with her second dose of the Pfizer COVID-19 vaccine since she experienced being positive for COVID-19 in between the first and second dose. She stated that she did not have any antibody treatments for COVID-19 and was only treated with antibiotics for the bilateral pneumonia. Stated on 03Apr2021, she had a rapid Covid test that resulted negative, and had regular Covid test taken, states she got the results back on Apr2021 and it was positive, states she went back for another regular test on 07Apr2021 and the results came back on 09Apr2021 and she was cleared for Covid. Caller states she had another chest X-ray on 16Apr2021, states at the time she was clear of pneumonia. States on 03Apr2021 she started taking antibiotics and a Z-Pak, states she started her second round of the Z-pak 6 days ago, due to take her last dose of cefuroxine-axetil, her antibiotic, on 22Apr2021. The outcome of the events was reported as recovered.