2U4-25213-01436 · OpenVSafe

Timeline

Registration Vaccinations Survey responses Call reports Cases without a report Call attempts Call successful Pregnancy survey

2021-01-07
Dose 1 — Pfizer-BioNTech
2021-01-13
Registered in v-safe
2021-01-13
Health check-in — days 1–6 daily, dose 1
Feeling: Good · Site: Pain · Nausea

Adult check-in
2021-01-14
Survey response — day 7, dose 1
MedDRA: Menstruation irregular — Feeling: Good

Free text: Over the weekend my period started. I am on the pill and in the middle of my month of pills. This has never happened to me. Not sure if is at all related or not but thought I should report as this has never happened to me.

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-01-23
Health check-in — day 14, dose 1
Feeling: Good

Adult check-in
2021-01-28
Dose 2 — Pfizer-BioNTech
2021-01-28
Health check-in — day 0, dose 2
Feeling: Good · None

Adult check-in
2021-01-29
Health check-in — days 1–6 daily, dose 2
Feeling: Good · Site: Pain · Fatigue or tiredness

Adult check-in
2021-01-31
Survey response — days 1–6 daily, dose 2
MedDRA: Dysmenorrhoea, Heavy menstrual bleeding — Feeling: Good · Fatigue or tiredness

Free text: Heavy period and bad cramps

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-02-01
Health check-in — days 1–6 daily, dose 2
Feeling: Good · None

Adult check-in
2021-02-02
Health check-in — days 1–6 daily, dose 2
Feeling: Good · None

Adult check-in
2021-02-03
Health check-in — days 1–6 daily, dose 2
Feeling: Good · None

Adult check-in
2021-02-04
Health check-in — day 7, dose 2
Feeling: Good · None

Adult check-in
2021-02-12
Survey response — day 14, dose 2
MedDRA: Menstrual disorder — Feeling: Good

Free text: Had a period about 24 hours after getting my shot. It lasted 2-3 days and then didnt have one for a few days and then had another one that lasted about 5 days. Again I am on the pill and never have a period. This period was heavy and while on pill

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-02-18
Health check-in — day 21, dose 2
Feeling: Good

Adult check-in
2021-02-25
Health check-in — day 28, dose 2
Feeling: Good

Adult check-in
2021-03-04
Health check-in — day 35, dose 2
Feeling: Good

Adult check-in
2021-03-13
Health check-in — day 42, dose 2
Feeling: Good

Adult check-in
2021-04-29
Health check-in — 3 months, dose 2
Feeling: Good

Adult check-in
2021-07-31
Health check-in — 6 months, dose 2
Feeling: Good

Adult check-in
2022-01-30
Health check-in — 12 months, dose 2
Feeling: Good

Adult check-in

Vaccinations

Dose	Date	Manufacturer	Co-administered
1	2021-01-07	Pfizer-BioNTech
2	2021-01-28	Pfizer-BioNTech

Free text

Release 1 — day 7, dose 1

2021-01-14

Systemic reaction (other): Over the weekend my period started. I am on the pill and in the middle of my month of pills. This has never happened to me. Not sure if is at all related or not but thought I should report as this has never happened to me.

Release 3 — days 1–6 daily, dose 2

2021-01-31

Systemic reaction (other): Heavy period and bad cramps

Release 4 — day 14, dose 2

2021-02-12

Symptoms: Had a period about 24 hours after getting my shot. It lasted 2-3 days and then didnt have one for a few days and then had another one that lasted about 5 days. Again I am on the pill and never have a period. This period was heavy and while on pill

Each entry is dated by the survey it was written in (the CDC re-sent the releases with survey dates in 2025); click a date to see that survey response. The CDC cut some text off at about 250 characters: symptoms in every release, and the other two fields in releases 9-12. Those entries are marked "cut off by CDC".

MedDRA terms by release

Field	Preferred term	2021-09	2023-04	2024-11
SD	Menstrual disorder	✓	✓	✓
SRO	Dysmenorrhoea	✓	✓	✓
SRO	Heavy menstrual bleeding	✓	✓	✓
SRO	Menstruation irregular	✓	✓	✓

✓ active code · ○ coded but marked inactive · blank = not in that release