The description sounds like airway issue. It may be partial block of the stream of air right from the lower level of airway to the level of larynx
. That produces the hissing sound. The chest pain
can be related to heart or lung /airway related.
Lining of the heart (pericarditis
) can recur and present it the same way and very short lived (6 to 8 sec) This is specially true for one with frequent infections / allergies / asthma
. It is ideal to test if the frequency of the pain increases. Yes you should go for 2 D ECHO and blood counts with ESR
Let me know if you have further concerns.