I also had the covid vaccine in October and didn’t have any symptoms..it didn’t aggravate my long covid symptoms either which was my first concern. I heard that they developed yet another covid vaccine for the spring but I don’t know why, perhaps they found another variant that the current vaccine is not helping. I never had any issues taking the numerous covid vaccines because I trusted them and I still do but it’s very apparent that covid is constantly changing, in fact I read that covid can change even when it’s inside us which leaves me wondering if they will ever have a vaccine that covers everything.