YOU SAID:

I broke my back. It still hurts three weeks later.

INTO JAPANESE

私は背中を折った。それは3週間後もまだ痛いです。

BACK INTO ENGLISH

I broke my back. It still hurts after 3 weeks.

INTO JAPANESE

私は背中を折った。 3週間経ってもまだ痛いです。

BACK INTO ENGLISH

I broke my back. It still hurts after 3 weeks.