This is a spontaneous report from a contactable consumer. A 28-years-old male patient received second dose of BNT162B2 (COVID-19 VACCINE, Batch/Lot Number: EW0183, Expiration Date: 31Aug2021) via an unspecified route of administration, administered in Arm Left on 15May2021 16:00) as 2nd dose single dose for COVID-19 immunization. The patient medical history included seasonal allergies (From Unspecified to Ongoing) around 10 or 11 years old and allergic tree pollen mainly, cedar trees and animal fur. The patient concomitant medications included 0.4mg oral tamsulosin HCL taken for kidney stone from 03May2021 to 13May2021, hydrocodone and acetaminophen taken for renal pain from 03May2021 to 13May2021 (patient only took when he was in drastic pain (pain for kidney stone). Not as a daily medication), 10mg oral cetirizine hydrochloride (ZYRTEC ALLERGY) for seasonal allergies so that he can breathe normally, oxymetazoline hydrochloride (CLARITIN ALLERGIC) taken for seasonal allergy, allergy to animal (start and stop date were not reported), paracetamol (TYLENOL). Patient previously received first dose of BNT162B2 (COVID-19 VACCINE, Batch/Lot Number: EW0172, Expiration Date: 31Aug2021) via an unspecified route of administration, administered in left upper arm on 24Apr2021 as 1st dose single dose for COVID-19 immunization. Patient diagnosed with kidney stone (from 24Apr2021 to 13May2021) same day evening when he got the first Covid-19 vaccine. Trying to stay hydrated, noticed a bit of pinkish red when he went to the bathroom, he thought it was just a side effect. Woke up with a lot of pain and after some testing, they told him he had a kidney stone. He was fighting a kidney stone and taking medication for span of time between first covid-19 vaccination and second vaccination. He doesn't think it is related. The doctor gave a couple medications just for monitoring things, the next day after 13May2021, he went for a CT and haven't felt anything since from the kidney stone.  Prior to vaccination, patient was not diagnosed with COVID-19. On 15May2021, the patient had little bit of bleeding at injection site and he had treated with band aid. A couple days later when he took off the band-aid he noticed a yellow-green spot around the injection site and it's been there for about 9 days now. Caller wants to know if this discoloration is normal. Patient was generally healthy. He does not know if he has been asymptomatic or not. Willing to help others by getting the vaccine just in case. Patient stated he got covid-19 vaccine two Saturdays ago to be exact and he was feeling alright. There was only one thing that did concern him, and he was not sure if it was a minor side of effect or not. He noticed a yellow/green discoloration around injection site of where he got the vaccine. He was wondering if it was a normal side or something of an outlier. Patient was wondering if they can help him with this or should he go back to website with this. Event occurred with the second shot of vaccine. Around the area around where it was injected there was very light yellow/green and he was just wondering if it was normal for most vaccines because it has been a couple of days and he hasn't really noticed it change back to skin color and all that. Patient tried using google for side effects but he didn't see anything about his problem and searched the vaccine, green skin, yellow skin. It was pulling up information on skin rashes which he doesn't think that is the case because it is skin discoloration. Patient describes this as a small circle-ish blot on upper left arm. Since the vaccination, the patient not been tested for COVID-19. At the time of this report event vaccination site bleeding was recovered on 15May2021 and other events were not recovered.  Follow up attempts are needed. Further information has been requested.