YOU SAID:

i walked to the coffee shop and then my jaw dropped in shock

INTO JAPANESE

喫茶店に行ったらショックで顎が落ちた

BACK INTO ENGLISH

When I went to a coffee shop, my jaw dropped from the shock.

INTO JAPANESE

喫茶店に行った時、ショックで顎が落ちた。

BACK INTO ENGLISH

When I went to a coffee shop, my jaw dropped in shock.

INTO JAPANESE

喫茶店に行ったとき、ショックで顎が落ちました。

BACK INTO ENGLISH

When I went to a coffee shop, my jaw dropped in shock.