没收到你的回复，我有些忐忑不安．请译英文

Not receiving your reply,I feel somewhat in fear and trembling.

Having not received your reply, I'm a little worried.

I don't feel comfortable without hearing (receiving) your reply.

没收到你的回复，我有些忐忑不安
It upset me because I didn't recieve your reply.

I feel uncomfortable because I haven't heard of you