YOU SAID:

I sharted in P.E and I can’t stop ever since.

INTO JAPANESE

私は体育を始めて以来、やめることができません。

BACK INTO ENGLISH

Ever since I started PE, I can't stop.

INTO JAPANESE

体育を始めてからやめられません。

BACK INTO ENGLISH

I can't stop since I started doing physical education.

INTO JAPANESE

体育を始めてからやめられない。

BACK INTO ENGLISH

I can't stop since I started doing physical education.