her head doesn't feel normal; head cold; Mucus; This is a spontaneous report from a contactable consumer (Patient). A 78-year-old female patient received first dose of BNT162B2 (PFIZER-BIONTECH COVID-19 VACCINE, solution for injection, Batch/Lot number: EN6201 and Expiration date was not reported), via an unspecified route of administration, administered in right arm, on 10Feb2021 (age at vaccination was 78 years) as dose 1, single for COVID-19 immunization at clinic. The patient medical history was not reported. The patient family medical history relevant to AE included neoplasm malignant from an unknown date and unknown if ongoing reported as not really, the big thing was just cancer. Concomitant medications included guaifenesin (MUCINEX, Lot number: ACL187, Expiration date: Apr2023) UNK, 1-2 tablets by mouth about every 8 hours, about twice a day, orally taken for an unspecified indication from 23Feb2021 to an unspecified stop date. The vaccine was not administered at a Facility. The patient did not have any History of all previous immunization with the Pfizer vaccine considered as suspect. There were no Additional Vaccines Administered on Same Date of the Pfizer Suspect. The patient did not receive any other vaccines within 4 weeks. The patient experienced her head doesn't feel on an unspecified date, head cold and mucus on 01Mar2021. It was reported that the patient received first dose of Pfizer-BioNTech COVID-19 Vaccine and reported that after her first dose she "Woke up with head cold". She asked if she should get her second dose as scheduled on 03Mar2021. She asked if she should get her second dose as scheduled on 03Mar2021 and what if her doctor delays her appointment/receipt of second vaccination? Later it was reported that This morning the reporter woke up with a head cold, lots of mucus after the first hour or so when she's up. The reporter is not coughing, she thinks it's just a head cold. The reporter took some Mucinex to help with the symptoms. The reporter is anxious to get her second dose but wants to know if it is okay with her having the head cold.  It was reported that when the patient is asked if her head cold symptoms have improved, are persisting, or worsened she states that the symptoms started off and on when she got up this morning. The patient has lots of mucus, it's in her head. The patient mentions that she doesn't usually get sick and that after Mucinex her symptoms have gotten better. The patient says that the 12-hour Mucinex taking care of the lots of mucus but believes it has stopped today. The patient mentions that her head doesn't feel normal, but it's not a headache, yesterday and the day before she was fine. In the last week the patient has been taking Mucinex off and on, she was taking the 4 hours because the store was out of the other one. The reporter mentions sometimes she took 2 pills, sometimes she just took just one. Also, sometimes she didn't take it every 4 hours, sometimes she went 8 hours. The reporter didn't do what it said, she didn't feel like she needed it, it seemed to do okay. She hates taking pills. So, this morning she was very surprised when she got up. 4-hour Mucinex: LOT ACL187, expiration Apr2023Description of complaint: The reporter is reporting today about the Pfizer Covid vaccine. The reporter's second dose is due on Wednesday, 03Mar2021. This morning the reporter woke up with a head cold, lots of mucus after the first hour or so when she's up. The reporter is not coughing, she thinks it's just a head cold. The reporter doesn't know if she got the first vaccine, she didn't feel anything. Lot: EN6201, unknown expiration. In the last week the patient has been taking Mucinex off and on, she was taking the 4 hours because the store was out of the other one. The reporter mentions sometimes she took 2 pills, sometimes she just took just one. Also, sometimes she didn't take it every 4 hours, sometimes she went 8 hours. The reporter didn't do what it said, she didn't feel like she needed it, it seemed to do okay. She hates taking pills. So, this morning she was very surprised when she got up. 4-hour Mucinex: LOT ACL187, expiration Apr2023. No further details were provided or obtained. There was product complaint. Event did not require a visit to Emergency room and Physician's office. There were no relevant tests. The outcome of event Mucus was recovered on an unspecified date in 2021, and for her head doesn't feel normal and heat cold was unknown.  No follow-up attempts are possible. No further information is expected.