Just copied and pasted this from the Weightwatchers site:
Can I follow the Points diet if I'm breastfeeding my baby?
If you are breastfeeding and your baby is less than six months old, we ask you to get your doctor's permission before you join Weight Watchers Meetings or start attending Meetings again if you were a Member at the beginning of your pregnancy.
If your baby is less than six weeks old or if you have not yet had your postnatal examination you may not join Weight Watchers Meetings or attend Meetings. If you have already joined or attended and were not aware of this, please tell your Leader - she or he will be happy for you to continue with your Meetings Membership once your baby is old enough. The online subscription products available through WeightWatchers.co.uk are not appropriate for breastfeeding mothers at this time.
Will I have to pay another registration fee for Meetings when I come back to Weight Watchers after having my baby?
If you joined Weight Watchers Meetings before you were 12 weeks pregnant you need not pay another registration fee as long as you return before your baby is six months old and you still have your Membership Card. If you are a Gold Member, you may attend Meetings free of charge until your baby is six months old, even if you are more than 5lb over your Goal Weight.
Once your baby is six months old, you will be asked to pay the weekly Meetings fee if you are more than 5lb over your Goal Weight.
If you are a subscriber to Weight Watchers Online or Weight Watchers eSource, you should cancel your subscription when you become pregnant, and re-register once you have stopped breastfeeding, your baby is six months old, and you have had your postnatal examination.
Hope that answers a few more questions. I'd have loved to do WW online - it means you don't have to go to classes, but as I'm still bf I think I'm out of the running atm. Excuses, excuses...