Well I had them both in one arm last November and i regretted it. I got them on a Saturday, felt fine, went to work on a Sunday 6 hours, no problems. I got home was shaking, high temp, vomiting. In bed for 3 days. I don't know if it was just coincidence that I had both at once in the same arm but I am going to ask for different arms this time. I felt it was too much of an onslaught.
I have had 3 injections and got covid in May. I didn't find it too bad. I had a cough for a few days high temp sore throat then 6 days was negative. So glad I had the vaccines. I am type 2 diabetic chubby and have atrial fibrillation