Lots of water, and your prenatals! (Even if you have to take them at night!)
They might prescribe you with zofran at your gyno explain to them next time whats going on in detail good luck iam 24 weeks and still like you but now also no appetite. Although I haven't takwn the zofran alot of people do but I try not to take anything that isn't a prenatal. Good luck feel better soon ♡
Try snacking through out the whole day and stay hydrated. Usually the first trimester is the worst just hang in there :)
try to eat crackers to.see if that helps
Keep taking your prenatal vitamin. If they make you sick, switch to a multivitamin. You can even take children's vitamins. Make sure you are drinking water, and when you do eat make sure it is something full of nutrients. Fruit and vegetables are your body's best source of food.