深夜2點左右，胸 behind breast bone, closer to the back, 會有dull pain

來源: 於 2019-11-22 06:35:46 [舊帖] [給我悄悄話] 本文已被閱讀：次

During the day, I am perfectly fine. No shortness of breath, no fever, nothing.

為啥呢？