You can look up your batch at:
According to data reported in VAERS, reproduced here, adverse events triggered by Pfizer batches have varied widely.
5% of the batches appear to have produced 90% of the adverse reactions
Some Pfizer batches are associated with 30x the number of deaths and disabilities compared to other batches.
For those who say they took 3 or 4 jabs and nothing happened to them