got my 2nd pfizer shot on Friday. Friday night the arm that got the shot in was sore to the point of painful to touch and I started to get that "I am getting sick" body ache. By the time I got up on Saturday my arm felt fine, but I still had the body ache and felt like I had a slight fever (no raised temp thou). Sunday I felt fine.
Also Friday night and all day Saturday I had a strong seasonal allergy response (watery/itching eyes). I don't think it was related to the vaccine as it is allergy season and everyone is cutting lawns and such.
Also if anyone is looking for it, OfficeMax/OfficeDepot is offering to copy/shrink (down to credit card size) and laminate the copy of the vaccine card for free. the offer runs thru sometime in July