YOU SAID:

I am having a very serious panic attack

INTO JAPANESE

私は非常に深刻なパニック発作を起こしている

BACK INTO ENGLISH

I'm having a very serious panic attack.

INTO JAPANESE

私は非常に深刻なパニック発作を起こしています。

BACK INTO ENGLISH

I have a very serious panic attack.

INTO JAPANESE

私は非常に深刻なパニック発作を持っています。

BACK INTO ENGLISH

I have a very serious panic attack.