The English translation of “我恐怕” is “I am afraid”.
To write a more natural and appropriate English sentence, you could also say “I am afraid that…”,”I am afraid to think about it…”,”I am afraid that…”,”I am afraid it will…”,”I am afraid that…”,”I am afraid that…”,”I am afraid it is possible that…”,”I am afraid it will be…” or “I am afraid it might be…”.
