Weight loss

Has anyone else been consistently loosing weight? My doctor told me a few pounds in the first 3 months is normal but when I went in yesterday they got a little worried for the fact that I’ve lost 10 pound in 3 weeks. My belly and my boobs are growing so they know the baby is getting what it needs however I’ve been getting dizzy spells and have actually fallen a couple times dt blood sugar dropping because I’m not getting what I need. Food just doesn’t sound good and when I do eat if I eat until I’m full it’ll just come back up. I’ve been munching on crackers and things high in protein when I can. Is there anyone else in the same boat?