Muscle spasms under right arm near rib cage; Based on that right arm, up under the arm area, having maybe a little pain there; This is a spontaneous report from a contactable consumer (for himself). This 64-year-old male patient received bnt162b2 (PFIZER-BIONTECH COVID-19 mRNA VACCINE; Solution for injection, Batch/Lot Number: EW0150, Expiry Date: Unknown), dose 2 via an unspecified route of administration, administered in the Arm Right on 14Jun2021 (at the age of 64-year-old) as DOSE 2, SINGLE for covid-19 immunisation (Didn't want to get Covid, family getting it). The patient's medical history wand concomitant medications were not reported. Patient had received first dose of vaccine bnt162b2 (PFIZER-BIONTECH COVID-19 mRNA VACCINE; Solution for injection, Batch/Lot Number: ER2613), dose 1 via an unspecified route of administration, administered in the Arm left on 24MAY2021 (at the age of 64-year-old) as DOSE 1, SINGLE for covid-19 immunisation. The patient experienced muscle spasms under right arm near rib cage on Jun2021, based on that right arm, up under the arm area, having maybe a little pain there on Jun2021. Patient reported that, after first dose he experienced "sinus problems". It was reported that, Patient went back to get the second dose Pfizer Covid 19 shot last week, it was the 24th. he has mixed up his days and it was about 2 weeks ago the patient received the second dose Pfizer Covid 19 shot. He Had severe sinus problems after first dose. Patient told lady who gave him first dose Pfizer Covid 19 shot that he had severe sinus problems and had to go to the G1doctor to get a shot. he had asthma. She said normally some people have sinus problems. He said, it started to get in the patient's chest, and got congestion in his chest. Patient stated, severe sinus problems maybe like 2 to 3 days after the he received the first dose Pfizer Covid 19 shot, maybe later, maybe longer. Could had been the weather change. The lady the patient spoke to at the vaccination facility who gave him his first dose Pfizer Covid 19 shot said a lot of people complain about the weather and the patient's symptoms may go away. Patient stated the sinus problems went away. He took some sinus medication, and the sinus problems went away and went away completely. After his second dose, he reported that he experienced muscle spasms under right arm near rib cage, denied any swelling and explained that this resolved in 2-3 days later. Patient just got the second dose Pfizer Covid 19 shot in his other arm and was not having pain in the arm. But based on that right arm, up under the arm area the patient was having maybe a little pain there. Patient stated he may have to go to the doctor. Patient stated, it might be related to the Pfizer Covid 19 Shot or it might be something else. Patient was trying to figure out if this pain is something caused by the Pfizer Covid 19 shot. Patient reported that, based on that right arm, up under the arm area, having maybe a little pain there, began maybe like 3 or 4 days after the he received the second dose Pfizer Covid 19 shot. Sometimes the caller moves the arm in a certain type of way and maybe gets like a gas pocket or not. stated it was not hurting, hurting. He was wondering if it may be from the Pfizer Covid 19 shot. The pain was improving every day. Patient wanted to know if one of the side effects might be gas and to know what most people complain of. Reporter seriousness for the event was Unspecified. Outcome of the having maybe a little pain there was recovering, and rest of the events were unknown.  Follow-up attempts are needed; Additional information has been requested.