Injection site pain lasted for 7 days; returns unexpectedly off and on since like I just received the vaccine again; Migrating joint pain; Swelling that's different from typical symmetrical joint pain due to medical condition(s) (arthritis, fibromyalgia, ankylosing spondylitis); Deep aching in bones where migrating joint pain is experienced; Unexpected bleeding/"extra" period after "normal" period; Unexpected bleeding/"extra" period after "normal" period; both are now heavier and longer (i.e., 5-7 days of light-medium flow before, now 8-10 days of medium-heavy flow); Continual lower back and abdominal/uterine cramping (i.e., period cramps); Continual lower back and abdominal/uterine cramping (i.e., period cramps); Continual lower back and abdominal/uterine cramping (i.e., period cramps); Continual lower back and abdominal/uterine cramping (i.e., period cramps); Low grade fever; Lethargy that's markedly different from usual symptoms associated with current medical condition(s); Increased skin modeling in upper arms that appears with "returning" injection site pain; markedly different in left arm (i.e., darker purple colors and swelling); Increased skin modeling in upper arms that appears with "returning" injection site pain; markedly different in left arm (i.e., darker purple colors and swelling); This is a spontaneous report received from a contactable reporter (consumer). The reporter is the patient.   A 35-year-old female patient (not pregnant) received BNT162b2 (PFIZER-BIONTECH COVID-19 mRNA VACCINE), administered in left arm, administration date 25Oct2021 at 20:15 (Batch/Lot number: unknown) at the age of 35 years as dose 1, single for COVID-19 immunisation. Relevant medical history included: "Fibromyalgia" (unspecified if ongoing); "Irritable bowel syndrome" (unspecified if ongoing); "Ankylosing spondylitis" (unspecified if ongoing); "Arthritis" (unspecified if ongoing); "Autonomic dysfunction" (unspecified if ongoing); "Polycystic ovarian syndrome" (unspecified if ongoing), notes: PCOS; "Thyroid nodule" (unspecified if ongoing), notes: thyroid nodules; "Nausea" (unspecified if ongoing), notes: Chronic nausea; "Vomiting" (unspecified if ongoing); "Sulfonamide allergy" (unspecified if ongoing), notes: Known allergies: Sulfa medicines; "Allergy to nuts" (unspecified if ongoing), notes: Known allergies: Hazelnuts; "Food allergy" (unspecified if ongoing), notes: Known allergies: Nutmeg; "Gluten intolerance" (unspecified if ongoing), notes: Gluten intolerant; "Spice allergy" (unspecified if ongoing), notes: Known allergies: cardamom and cloves and "Lactose intolerant" (unspecified if ongoing). Concomitant medications included: FETZIMA; CARVEDILOL; TRAMADOL; DIAZEPAM; ZYRTEC and METFOR.  The following information was reported: VACCINATION SITE PAIN (non-serious), ARTHRALGIA (non-serious), JOINT SWELLING (non-serious), BONE PAIN (non-serious), INTERMENSTRUAL BLEEDING (non-serious), HEAVY MENSTRUAL BLEEDING (non-serious), MUSCLE SPASMS (non-serious), UTERINE SPASM (non-serious), ABDOMINAL PAIN (non-serious), DYSMENORRHOEA (non-serious), PYREXIA (non-serious), LETHARGY (non-serious), LIVEDO RETICULARIS (non-serious), PERIPHERAL SWELLING (non-serious); all with onset 25Oct2021 at 21:00, outcome "not recovered", and all described as "Injection site pain lasted for 7 days; returned unexpectedly off and on since like she just received the vaccine again, migrating joint pain and swelling that was different from typical symmetrical joint pain due to medical condition(s) (arthritis, fibromyalgia, ankylosing spondylitis), deep aching in bones where migrating joint pain was experienced, unexpected bleeding/"extra" period after "normal" period; both were heavier and longer (i.e., 5-7 days of light-medium flow before, at the time of report it was 8-10 days of medium-heavy flow), continual lower back and abdominal/uterine cramping (i.e., period cramps), low grade fever and lethargy that was markedly different from usual symptoms associated with current medical condition(s), increased skin mottling (reported as skin modeling) in upper arms that appeared with "returning" injection site pain; markedly different in left arm (i.e., darker purple colors and swelling)". Therapeutic measures were not taken as a result of vaccination site pain, arthralgia, joint swelling, bone pain, intermenstrual bleeding, heavy menstrual bleeding, muscle spasms, uterine spasm, abdominal pain, dysmenorrhoea, pyrexia, lethargy, livedo reticularis and peripheral swelling.  Additional Information: Prior to vaccination, it was unknown whether the patient was diagnosed with COVID-19. The patient did not receive any other vaccines within four weeks prior to the COVID vaccine. Since the vaccination, the patient had not been tested for COVID-19. The events did not result in doctor or other healthcare professional office/clinic visit, emergency room/department or urgent care.     The lot number for BNT162b2 was not provided and will be requested during follow up.