experience swollen lymph nodes; felt weird/feels funny; anxiety to get the second shot; After the shot she just chilled all day; The bottom part of her under arm is swollen; arm soreness/still feels a little tender; stiffness at injection site; arm was stiff by Saturday evening; This is a spontaneous report received from contactable reporter (Consumer). The reporter is the patient.  A 49-year-old female patient received BNT162B2 (PFIZER-BIONTECH COVID-19 VACCINE), administered in arm left, administration date 13Mar2021 09:30 (Lot number: EN6204, Expiration Date: Jun2021) at the age of 49 years as dose 1, single for covid-19 immunisation. Relevant medical history included: "Asthma" (ongoing), notes: Diagnosed years ago, had childhood asthma too, Caller reports she has had asthma all of her life.; "childhood asthma" (unspecified if ongoing); "COVID-19" (unspecified if ongoing), notes: she already has antibodies because she had the virus. There were no concomitant medications. Vaccination history included: Pneumonia vaccine (Worse than this 2 or 3 years ago; whole left shoulder, neck hurt really bad for a few days, about 46, no lot/exp/NDC), for immunisation, reaction(s): "Whole left shoulder hurt really bad", "Neck hurt really bad". The following information was reported: SWELLING (non-serious) with onset 14Mar2021, outcome "recovering", described as "The bottom part of her under arm is swollen"; PAIN IN EXTREMITY (non-serious) with onset 14Mar2021, outcome "recovered" (17Mar2021), described as "arm soreness/still feels a little tender"; MUSCULOSKELETAL STIFFNESS (non-serious) with onset 13Mar2021, outcome "recovered", described as "arm was stiff by Saturday evening"; INJECTION SITE REACTION (non-serious) with onset 14Mar2021, outcome "recovered" (17Mar2021), described as "stiffness at injection site"; LYMPHADENOPATHY (non-serious), outcome "unknown", described as "experience swollen lymph nodes"; FEELING ABNORMAL (non-serious), outcome "unknown", described as "felt weird/feels funny"; ANXIETY (non-serious), outcome "unknown", described as "anxiety to get the second shot"; CHILLS (non-serious), outcome "unknown", described as "After the shot she just chilled all day". Therapeutic measures were taken as a result of lymphadenopathy. Additional Information: The patient reported she had a lump under her armpit and received the shot in her left arm. She first noticed it on Sunday, it felt weird under there, she noticed it was swollen. She mentioned that she saw one of the side effects was swollen lymph nodes or something. She clarified it did not ache or hurt; when she touched it, it didn't hurt either; it just felt funny. She also clarified it didn't feel like when you put too much deodorant on, and you get the knot. You can visibly see it under the skin. She reported that it is not that tender anymore, at first it was tender. It is still a little tender, but it doesn't ache or nothing like that. She reported that she was trying to relax, but when she looked it up, it said cancer, and she did not want to have cancer. She reported that she let her doctor's office know that she was getting her vaccine at the clinic. The patient clarified it was not really a lump, the bottom part of her underarm was just swollen and when you touch the site, it still felt a little tender, not achy, just stopped feeling like how it felt before. The patient reported that since her arm wasn't sore anymore, then maybe this will start to go away. On the pamphlet it says if you experience swollen lymph nodes as one of the side effects, it should go away in a few days. On Sunday, 14Mar2021, her arm started getting sore; it wasn't extreme, she could lift it and move it. The patient read online that the treatment for swollen lymph nodes are to put a warm compress on it and pain medicine. She has been putting warm compresses on it every night and taking ibuprofen every night. (200 mg tablets, takes 2 tablets). The patient clarified her arm is no longer sore to touch or even when you press on it and she stated that this gave her anxiety to get the second shot. Her second shot is scheduled for 03Apr2021, they will text her the time. She received the vaccine to protect herself because she has asthma; she already has antibodies because she had the virus. Caller states she received it basically to get it over with. The patient stated that her mom passed away on Monday and she was fighting Covid. The patient has no history of all previous immunization and no additional vaccines administered on Same Date of vaccination. The patient reported that the bottom part of her underarm is swollen - started early Sunday afternoon, around 12 or 1 PM; experienced arm soreness/stiffness at injection site- started getting sore after the vaccine, it felt like a flu shot, her arm was stiff by Saturday evening, around 6-8 PM. After the shot she just chilled all day. The adverse events did not require Emergency Room or Physician Office Visit. The patient did not have prior vaccinations within 4 weeks. There was no family medical history relevant to adverse events. There were no relevant tests done.   No follow-up attempts are possible. No further information is expected.