In general, folks can expect more side effects after the second dose of their COVID-19 vaccine.
Vaccine Safety Datalink
The initial clinical trials that were used to get the COVID-19 vaccines approved did show they were safe and effective, you can be assured that there are many safety and monitoring systems in place that will continue to monitor folks for adverse effects.
Are you looking for all of the vaccine studies that aren’t funded by Big Pharma?
Did the DTaP Vaccine Only Have a Four Day Clinical Trial?