YOU SAID:

i have severe whiplash, and it hurts

INTO JAPANESE

私は深刻なむち打ち症があり、それが痛い

BACK INTO ENGLISH

I have serious whiplash, it hurts

INTO JAPANESE

私は深刻なむち打ち症がある、それは痛い

BACK INTO ENGLISH

I have serious whiplash, it hurts