Obese pregnancy and weight loss

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Hello my name is Angela. I’m about 19 weeks pregnant. 330 lbs. I’ve lost about 12 pounds since the beginning of my pregnancy. I have no appetite and even into my second trimester I’m still throwing up a lot. I brought this up to my doctor and that I’m worried I’m not eating enough calories to keep my baby healthy. I’m eating around 1200-1500 on a good day. Much less if I’m throwing up. I’m concerned but my doctor just said to continue my “diet”. I’m not on a diet. This is not intentional. I’m worried. Any recommendations on what I should do? Any different things I can ask? I feel like I’m not being listened to and he’s just dismissing my concerns because I’m fat. Help please….
Achieve your health goals from period to parenting.