YOU SAID:

i was sitting in bed then i couldn't stop moving there was something tickling me

INTO JAPANESE

私はベッドに座っていて、何かくすぐるものがあったので、動きを止めることができなかった

BACK INTO ENGLISH

I was sitting on the bed and something tickled me, so I couldn't stop moving

INTO JAPANESE

ベッドの上に座って何かがくすぐったかったので、動きが止まらなかった

BACK INTO ENGLISH

Sitting on the bed, something tickled me and I couldn't stop moving

INTO JAPANESE

ベッドに座っていると、何かがくすぐったくなって、動きが止まらなくなった

BACK INTO ENGLISH

sitting on the bed, something tickled and stopped moving

INTO JAPANESE

ベッドに座ったまま、何かがくすぐって動かなくなった

BACK INTO ENGLISH

something tickled and stopped moving while sitting on the bed

INTO JAPANESE

何かがくすぐり、ベッドに座ったまま動かなくなった

BACK INTO ENGLISH

something tickled and stopped moving while sitting on the bed