My heart suddenly stabbed last night when I was typing. At first I thought it was because I had been sitting for a long time, but I still haven’t recovered well today. Taking a deep breath feels like my heart has been pricked by a needle, and it hurts even when I bend my body slightly.

  Ask a doctor friend and say it might be myocarditis. If it gets better tomorrow, if it doesn’t work, go to the hospital for an examination.