I had a bad experience myself. Didn’t have any problems with the first one. The second one really did a number on me the following day, which I expected. However, 2 days later, I started having chest pains that would come and go. With any light activity I would get winded and have to sit down for a few minutes to catch my breath. 4 days after my second shot, I was driving down the road and the chest pains flared up again. This time it was accompanied by a very brief electric feeling in my left arm. This was very concerning for me to say the least. I’m 46, in good health and don’t take any pres