Stressful

Hello ladies, this is my first pregnancy. I am so stressed because I have been so weak. I can barley eat any food without feeling full. I can’t keep drinking water because my body will just throw it up if I just drink water and no food. But I don’t know what to do or eat because I am not hungry for any big meals just little bites here and there. I’m not putting in any weight and I’m 7weeks. I’m scared I’ll have a miscarriage because baby isn’t getting what it needs. Plus I can’t take my prenatal vitamins because they require me to have it with food or I throw up 🤢. What to dooo