Incredible sweet breathing from heart and throat

i am following swami kriyanand book fourteen step for higher awareness and doing asana since 6 months.also doing kundalini pranayam from you tube video suggested by member from here…
after a while i am experiencing sweet breathing from anahat and vishudhdhi chakra form day time.
timing is any time during day when i am not aware.it suddenly happen when i am reading or walking or talking to someone…
its so sweet that i just close my eyes and sit for few minutes to dive deep into it…
what is this?
what should i do now?
what should be my next step?
meditation but what kind of?
i am doing talabya kriya 100 daily but not able to do khechari yet…
some strange sound are heard when sitting in silent.

help from advance practicioner appreciated :confused::confused: