YOU SAID:

I think I was mistaken and have a cold and not allergies which makes every drug purchase I got today useless.

INTO JAPANESE

私は間違っていて、アレルギーではなく風邪をひいていたので、今日買ったすべての薬は役に立たないと思います。

BACK INTO ENGLISH

I am wrong and have a cold, not an allergy, so I think all the medicines I bought today are useless.

INTO JAPANESE

私は間違っており、アレルギーではなく風邪をひいているので、今日買った薬はすべて役に立たないと思います。

BACK INTO ENGLISH

I am wrong and have a cold, not an allergy, so I think all the medicines I bought today are useless.