YOU SAID:

I an afraid I will hit a cat on my bike and a Bird will attack me

INTO JAPANESE

自転車で猫を殴り、鳥が私を襲うのではないかと心配しています

BACK INTO ENGLISH

I'm hitting a cat on my bike and I'm worried that a bird will attack me

INTO JAPANESE

自転車で猫を殴っていて、鳥が私を襲うのではないかと心配しています

BACK INTO ENGLISH

I'm hitting a cat on my bike and I'm worried that a bird will attack me