Pregnant but losing weight?

Jac • 29 years old. Living in Korea.

I want to know if anyone has experienced this. Normally I am 64-66 kilos. I was 68 kilos last week. (About 7 weeks pregnant) But I weighed myself today and I am 65.6 kilos now.

I'm eating fine. Even eating more than I usually do. My body looks like it has extra weight on it so why is the scale falling?