I took my second covid shot and it was the worst. The first shotgave me a sore in the arm thenext morning that lasted two days. I thought that was the worse but I was sure in for a surprise. The second covid shot was 3 weeks after the first. I took the shot and waited 15 min until I was allowed to leave. I felt the sore arm within 2 hours instead of the next morning which was very uncomfortable. That same night I was hit with a shivering cold around 3am that woke me up and was woken up again an hour later to a pool of sweat. This lasted about 3 days and thank god I am fine now.