Speech issue symptoms and conditions

Today is day 8 on Topamax. The only symptoms I've really had were the first few nights on it I woke up in the middle of the night but that has stopped. I had a few bad dreams but that has stopped. Drinks taste a little weird to me, but nothing like anyone else on here has described. I can still taste the carbonation at times. I just started taking 50mg today. I do 25mg in the am and I am going to take 25mg in the pm. For the previous 7 days I was only on 25mg per night. I have heard all this talk about weight loss on Topamax. That's part of the reason I am on it...to counteract the weight I have gained since I've been on Lamictal. Anyway, I haven't noticed a decrease in my appetite OR any weight loss at all so far. I was just wondering how long it took to start affecting you guys with the weight loss. Is there a certain mg you are on that it starts to affect your appetite/weight loss or a certain time frame or what? Any information would help. Thanks!