YOU SAID:

if you come to my bedroom then you won't be able to walk for a long while

INTO JAPANESE

あなたが私の寝室に来たら、あなたは長い間歩くことができないだろう

BACK INTO ENGLISH

If you come to my bedroom, you won't be able to walk for a long time

INTO JAPANESE

私の寝室に来ると、長時間歩けなくなる

BACK INTO ENGLISH

When I come to my bedroom, I can't walk for a long time

INTO JAPANESE

寝室に来ると、長時間歩けない

BACK INTO ENGLISH

When I come to my bedroom, I can't walk for a long time