weight gain/loss in 3rd trimester.

Went to the doctors earlier for my appointment and had to get weighed like usual. I'm always scared of that part because I am overweight. When I first got pregnant I was 235. And last appointment I was at 253. So naturally I dreaded getting on the scale cuz I usually get super depressed after this part. But it said I lost 3 pounds in the past 2 weeks. I don't see how that could have happened since I'm usually so hungry that I eat everything in sight it seems like. Is it normal to lose in the 3rd trimester? I always heard you gain a lot in the last couple of months. I'm currently almost 32 weeks. I'm glad I didn't gain anything but at the same time I don't know how I feel about losing it either. Especially since I don't see how I could have. My doctor didn't say anything about it so maybe it's normal? 😩 I'm a ftm so everything worries me lately.