fever, feeling tired, nausea, etc. This includes other side effects from inflammatory responses such as myocarditis in more susceptible groups: males from the ages of puberty to about 40. ~4 days after vaccination.
So far, no surprises at all.
https://www.thelancet.com/journals/lanres/article/PIIS2213-2600(22)00059-5/fulltext
6/10