Weight loss without trying?

Has anyone else lost a few pounds during pregnancy, but later in the process and not due to morning sickness/aversions/loss of appetite?

I’m 25 weeks tomorrow and have weighed myself most mornings after I got to 20 weeks as a way to keep an eye on my weight gain. Last week, I was up 16 pounds but now I’m only up 12 from pre-pregnancy weight. I try not to get caught up in the numbers because I work out 5 to 6 days a week (combination of Orangetheory/running/weight lifting and spinning) so I know I’m active. I also eat healthy for most meals (80/20 rule) with some cheats on the weekend. I am still feeling baby move around so that makes me feel better but just curious to know if anyone else has had this happen? Thanks ladies :)