(Please note that I also received a flu vaccine in the left arm on the same day at the same pharmacy.) I developed first chills (8pm to midnight), then a low fever (1.5 degrees F), and spent a pretty miserable night waking up sweating and miserable. I got up at 9 the next morning and took 400 mg ibuprofen. Within a couple of hours my fever was gone. My left arm was sore but nothing out of the norm for having received a vaccine. I gradually started feeling better over the next two days (Jan. 19 and 20). However: I also developed an intermittent hand tremor that lasted for the same two days. It was almost gone on Jan. 21 and is now gone completely. I just thought it was worth reporting. I had Covid in September of 2024 and at that time developed a sensation of internal tremors. Which was very weird. It lasted about 1 week after I stopped testing positive and has not returned.