First, congratulations on losing 10.5 lbs so far! That is awesome!
I agree with MiniAussieMommy, after two weeks in a row with fantastic losses, I would also gain or remain the same. Don't get discouraged! I know it's hard. Unfortunately, we are not always "rewarded" on the scale for our behavior. You will have weeks that you lose, gain, and stay the same. Your body is adjusting to the weight loss, activity, etc. It's not silly to want to see a loss for motivation and justification of all your hard work; I think we all want that! This is also a struggle for me, I know on the weeks I don't lose I try to find as many NSVs about the week that I can. For example, you are walking and staying OP, this is great! Don't let a slow week ruin all the hard work you are doing! Keep it up and next week will be great! In my experience the week after a gain is typically a decent loss
Also, instead of snacking at night could you add more Points to your meals throughout the day? For example, adding avocado to a salad, having a glass of milk or juice at breakfast, etc. I know it helps me to plan my day out in advance (typically the night before), this way I am not surprised by my Point usage. It helps me to avoid having to many Points at the end of the day or to few Points because I ate them all already! Just a thought!
Hope this helps! Keep up the great work! Remember you can't control the scale, don't even fight with it. Work on the things you can control (diet and exercise) and the scale will move, I promise!
Best of luck,
Losing It In Colorado