It's hard to say - it's an incredibly frustrating situation when you feel like you are making all the right choices!
Do you feel that your point target with Weight Watchers is appropriate for you? Have you mentioned it to facilitators at meetings - what do they say?
I am having the same problem. 45 yrs old, circuit training 4 days a week. calories around 1500 - 1600 and up and down weight (165 - 173) and inches NOT coming off. I read about this same delima alot... whats the solution?
I do the on-line program and the system figures out your points by weight, age etc... I don't go to meetings.
I eat around 1500 calories a day also. Very frustrating. If this happens a lot where are the answers?
It's possible you're not consuming enough calories.
When I was going to ww's I was consuming the equivalent of 24+ points and was consistently losing weight (despite having some very bad binge sessions).
Possibly I was over-estimating what I was eating and under-estimating my exercise.
Were you given a fast-start option as part of your program? Are you consuming an excessive number of points, do you think? Or too few?
Some say changing your routine can help. Maybe different exercise or different foods. Are you maybe miscalculating your food and activity points?
Weight Watchers generally have people (leaders) who you can discuss problems with.
There is also a weight watchers newsletter available which lists forums, etc where you can chat with other ww members.