Extreme hunger + weight loss

Serena • Soon to be first time mom. Trying for our little "Caramel Macchiato" Harris. TTC#1
Since ovulation til now 8DPO I've have lost naturally 5lbs but I'm eating a bit more now. I've been drinking mostly water but since my 2ww it's been mainly water sometimes I feel like I need something sweet now. Any insight? Could it be the water?