Hi! I'm on WW, too, and I did the program before, years ago. I had started at 245 and got to 165 in about 5 months. There were many weeks I lost five pounds. I had strictly followed my points, eaten healthfully, and exercised one hour a day. The heavier we are, the more we will lose on average until we get further into the 100s. I don't see your losses as anything to be concerned about right now.
One piece of advice, though, if I may: it is important to eat your points. I don't know what kinds of foods you're eating, but I am eating 41 a day and because I eat mainly healthful foods, I find it a bit difficult to get them all in. But, two things will happen: you will lose more quickly, and you will give your body the proper fuel it needs to function well and be healthy as you lose.
Good luck! You're doing great so far!