Well, it seems that you were too much into the Betfury site on that day, considering that dreams can often be an interpretation of your emotions and thoughts that you experienced before. Of course, prophetic dreams also occur, but it's extremely rare.
By the way, in the case of the Betfury wheel, it doesn't even show what the chance of winning 1 BTC is. Obviously, it's extremely low. I guess it's 1 in 1 bn or even lower.