I dont recommend reducing your syns too low, if you are just starting out. As they are what will help you stay on track when you fancy something out of the free foods list. We are allowed to have treats and syns are there to allow us to do that in moderation. Also if you reduce them too early, you will have nothing to lower once you get close to goal.
Your weight loss to me has been fine. Okay you had a gain one week, but you lost the other weeks.
However I would recommend like someone else suggested, starting a food diary. There are many little areas where mistakes can be made, while assuming you are being 100%, so if you want someone to double check for you, this is the best place to do so. There is a wonderful supportive bunch of people here.
Good luck and dont be too disheartened.