I've been doing WW at home. I believe that the daily points values are based on weight ranges (I think by 25 pounds), so you might have been just on the cusp of 29 daily points before you started, so when you lost that first 5 pounds it dropped you down into the next weight range. (I might be wrong about this - I have been doing it for free at home with a friend's older materials, and his starter book from a few years ago had the weight ranges in 25 pounds.) I started weighing 187 so I got 24 points a day, then when I got to 175 I was at 22 points a day, then below 150 I went to 20 points a day.
Definitely check with your leader to make sure you are in the right weight range and points value.
SW - 04-16-2007 - 187 pounds
1st Goal Met - 01-28-2008 - 140 pounds!
The "I gained weight after my wedding and need to lose it" goal: 133 lbs
The time for action is now. It's never too late to do something.