YOU SAID:

I swallowed multiple last night

INTO JAPANESE

昨夜複数飲み込んだ

BACK INTO ENGLISH

I swallowed more than one last night

INTO JAPANESE

昨夜、複数回飲み込んだ

BACK INTO ENGLISH

Swallowed multiple times last night

INTO JAPANESE

昨夜何度も飲み込んだ

BACK INTO ENGLISH

Swallowed many times last night

INTO JAPANESE

昨夜何度も飲み込んだ

BACK INTO ENGLISH

Swallowed many times last night