If I want to play in the next round, will I wait until wednesday or make a country now?

And I have to start from the beggining after every round?

Oh... so what does it practically mean? Do I have to create a new country or will it return automatically and will I lose all the progress I have made?

I just started playing yesterday and I don't know much of these things.

I was still playing yesterday evening, but now my express country is no longer there. The country number it had was #162 and it had about 650000 net worth. Could it be returned somehow or is there some kind of explanation? Please help me!