On 4/22/21 Menses has not started on time however the cramps resemble second stage of active labor.; On 4/22/21 Menses has not started on time however the cramps resemble second stage of active labor. Extreme bloating, bachache, contraction like pain; Extreme bloating; Backache, contraction like pain; Contraction like pain unable to catch breath whilecontracting, lasting 4 minutes in 6 minute intervals going on 12 hours; Contraction like pain l, unable to catch breath while contracting, lasting 4 minutes in 6 minute intervals going on 12 hours. Menses typically painful; 18 hours after 2nd dose -Extreme pain, high fever, fatigue, overwhelming  feeling of heat lasting for 12 hrs.; 18 hours after 2nd dose -Extreme pain, high fever, fatigue, overwhelming  feeling of heat lasting for 12 hrs; 18 hours after 2nd dose -Extreme pain, high fever, fatigue, overwhelming  feeling of heat lasting for 12 hrs. Extreme fatigue for 3 days.; 18 hours after 2nd dose -Extreme pain, high fever, fatigue, overwhelming  feeling of heat lasting for 12 hrs; This is a spontaneous report from a contactable consumer, the patient. A 44-year-old non-pregnant female patient received the second dose of BNT162b2 (PFIZER-BIONTECH COVID-19 mRNA VACCINE; Lot Number: ER8730) via an unspecified route of administration in the left arm on 12Apr2021 at 19:15 (at the age of 44-years-old) as a single dose for COVID-19 immunisation. Medical history included migraine, and high cholesterol. Prior to the vaccination, the patient was not diagnosed with COVID-19. Concomitant medications taken within two weeks of vaccination included paracetamol (TYLENOL) and lactobacillus nos (CULTURELLE); both from unknown date for unknown indication and unknown if ongoing. The patient previously received first dose of BNT162b2 (PFIZER-BIONTECH COVID-19 mRNA VACCINE; Lot Number: GN6208) via an unspecified route of administration in the left arm on 22Mar2021 at 18:45 (at the age of 44-years-old) as a single dose for COVID-19 immunisation. The patient previously took lamotrigine (LAMICTAL) and experienced drug allergy. Since the vaccination, the patient had not been tested for COVID-19. The patient did not receive any other vaccines within four weeks prior to the vaccination. On 13Apr2021 at 13:15, 18 hours after second dose the patient experienced extreme pain, high fever, fatigue, overwhelming  feeling of heat lasting for 12 hours. Extreme fatigue for three days. On 22Apr2021, menses had not started on time however the cramps resembled second stage of active labor. Extreme bloating, back ache, contraction like pain, unable to catch breath while contracting, lasting 4 minutes in 6 minute intervals going on 12 hours. Menses was typically painful however the pain was irregular. Menses was 2 days late, and it was reported that there was no way the patient was pregnant. The events did not result in doctor or other healthcare professional office/clinic visit, emergency room/department or urgent care. Therapeutic measures were not taken as a result of the events. Since the vaccination, the patient had not been tested for COVID-19. The clinical outcome of the event 18 hours after second dose extreme pain, high fever, overwhelming  feeling of heat lasting for 12 hours was resolved on 14Apr2021 at 01:15, while that of extreme fatigue for three days was resolved on 16Apr2021. The clinical outcome of the event on 22Apr2021 menses had not started on time however the cramps resemble second stage of active labor, extreme bloating, backache, contraction like pain, unable to catch breath while contracting, lasting 4 minutes in 6 minute intervals going on 12 hours and menses typically painful was not resolved at the time of this report.   No follow-up attempts are needed. No further information is expected.