I'm not worried about it. Just got my bi-lav of moderna, had a choice too. As well as a flu shot. Feeling a bit of both I think and will go to bed to sleep it off. Hoping not to wake up feeling shitty. I'd be surprised if I did. NONE of the vaccine injections bothered me except the second one for about three hours.
I'm ready to drop the mask in most places except real tight indoors with total strangers. And family gatherings with people who are all over the country. I live in a deep red area. I'll drop the mask completely when my doctors stop requiring it at visits there. They clear it, then I'm clearing it.