回复：非常郁闷- no offer yet

Do not lose your confidence.

I have had 6 interviews, like you, first round, and third one. One of them even about to give offer(They have checked the references) after second on-site interview.) However, I still failed all of them. I could sleep after the last one rejection,however, I feel better now. I will start again, so, it would not be the last rejection :)