Pfizer (I’m 44 and never had COVID to my knowledge.)
1st shot: Just arm soreness that night and the next day
2nd shot: Received it at 2:00pm(Sunday), was fine until 3:00am when I woke up with a TERRIBLE headache, chills and body sensitivity. (No fever) I typically get migraines so I’m used to bad headaches. I held off on taking Tylenol because I had been reading conflicting info on whether it affected the vaccine and it never works for me anyway. But 12pm(Monday), I couldn’t take it anymore and took some. It did nothing. I took a second dose at 4pm and like usual for me, Tylenol did nothing again. Went to bed before 8pm because I was so uncomfortable with the headache and chills. Woke up at 7:30am(Tuesday), still with a headache, but this felt more like a typical migraine for me. Took Excedrin and by 10am was back to 100%. Arm soreness had worn off by then as well.