What you call "weekend drinking" I refer to as "binge drinking". I very rarely would drink during the week and I knew long ago I would rather have "none than one" but, once I started... forget it. Thing was even if I only drank on Friday or Saturday I still had problems. I would end up in a blackout, argument, or so hung over and full of anxiety that I didn't want to do anything the next day.
I really enjoy my weekends now. Wake up clear headed and go to bed the same way. Whether or not you have a problem is really up to you to determine. For me ruining my weekends was a problem but, I know other people who consider the weekend "one big party" and enjoy binging. You decide... and be safe.