Is this okay?

Ab

This is my first pregnancy and I am now 12 weeks. I have my second appointment in two days on Wednesday. Last time I went my dr said that I would start to feel better by my second trimester but I don’t. I’m still losing weight and can’t eat more than a few bites of starches, if I can at all. Most of the time I can just have a milkshake or clear liquids. Sometimes rice pudding. Is this normal? And is this healthy? I feel like it can’t be good for my baby.