YOU SAID:

I drink seven drinks and then after that, I was drunk because of all the seven drinks I drank

INTO JAPANESE

私は7杯の酒を飲み、その後、飲んだ7杯の酒のせいで酔っ払ってしまった。

BACK INTO ENGLISH

I had seven drinks and then I was drunk from the seven drinks I had.

INTO JAPANESE

私は7杯飲んで、飲んだ7杯で酔ってしまいました。

BACK INTO ENGLISH

I had seven drinks and got drunk after the seven drinks I had.

INTO JAPANESE

私は7杯飲んで、飲んだ7杯で酔ってしまいました。

BACK INTO ENGLISH

I had seven drinks and got drunk after the seven drinks I had.