YOU SAID:

I should really be sleeping right now

INTO JAPANESE

私はする必要があります本当に今すぐに寝てください。

BACK INTO ENGLISH

I must be really sleep right now.

INTO JAPANESE

私が本当に寝なければならない今。

BACK INTO ENGLISH

I really must sleep now.

INTO JAPANESE

私は本当に今寝なければなりません。

BACK INTO ENGLISH

I really must sleep now.