Wow really? My longest winning streak was 2 and it only happened once... Guess I'm not that lucky when it comes to gambling 
What are you playing though? How long are you playing?
You might not be that lucky but I don't think that your only longest streak is 2. I am not that lucky in gambling and I am not gambling that much of my money but my longest streak ever was 11, and I did not earn that much since I am doubting the result since, let's be honest, dice sites are like that, you will not expect that kind of streak.