26R-30259-86207 · OpenVSafe

Timeline

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

2021-01-15
Dose 1 — Pfizer-BioNTech
2021-01-22
Registered in v-safe
2021-01-22
Health check-in — day 7, dose 1
Feeling: Good · Site: Pain · None

Adult check-in
2021-01-29
Health check-in — day 14, dose 1
Feeling: Good

Adult check-in
2021-07-16
Survey response — 6 months, dose 1
MedDRA: Dysmenorrhoea, Heavy menstrual bleeding, Menstruation irregular — Feeling: Good

Free text: Ever since my second vaccination, my periods have changed. The first period after the vaccination was like I was having a miscarriage I bled so much. All period thereafter I have been super crampy. These are symptoms I have not had my entire life!

MedDRA releases: 2021-09,2024-11 · check-in free text available

Vaccinations

Dose	Date	Manufacturer	Co-administered
1	2021-01-15	Pfizer-BioNTech

Free text

Release 9 — 6 months, dose 1

2021-07-16

Symptoms: Ever since my second vaccination, my periods have changed. The first period after the vaccination was like I was having a miscarriage I bled so much. All period thereafter I have been super crampy. These are symptoms I have not had my entire life!

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	Dysmenorrhoea	✓	·	✓
SD	Heavy menstrual bleeding	✓	·	✓
SD	Menstruation irregular	✓	·	✓

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