I feel and look like I lost weight or is it just me?

Rebecca • Married to my high school sweetheart. Currently have 2 children Xavier Cole and Mariah Nicole.
All I have been doing is drinking a whole lot more water and not eating as much fast food when I'm in town. If I do I just get a small salad. My husband says he doesn't see it but I feel like it's bc he sees me everyday. Plus it's only been a week.