YOU SAID:

Ok, so i was going to the park today, but then some jerk cut me off and i was late

INTO JAPANESE

よし、今日は公園に行く予定だったんだけど、急に邪魔されて遅刻してしまった

BACK INTO ENGLISH

All right, I was supposed to go to the park today, but I was suddenly interrupted and I was late.

INTO JAPANESE

よし、今日公園に行くはずだったのに、急に邪魔されて遅刻してしまった。

BACK INTO ENGLISH

All right, I was supposed to go to the park today, but I was suddenly interrupted and I was late.