There are definitely risks involved with vaccines, but at the end of the day I think the risk of the virus is orders of magnitude bigger than that of the vaccine.
There is no evidence that the COVID-19 vaccines can impair fertility.
https://www.muhealth.org/our-stories/does-covid-19-vaccine-affect-fertility-heres-what-experts-say
RE: Boostered, how I feel after the 3rd BioNTech/Pfizer shot :)