Hi! First time everything, and I’m so scared and anxious

This is the first time I’ve ever come up positive, according to the app I’m 7 weeks today. I have my first appointment on Wednesday but I’m so nauseous and tired and I’m really sensitive to smells. All I’ve eaten is soup and crackers and ginger ale to make myself feel better but I’m scared I’m not giving the baby real nutrition. I feel guilty about it but I just can’t keep any food down besides simple stuff. Is this normal or is it a bad sign? I really hope it isn’t like this the whole time.