Constant vomiting for weeks. How is my baby affected?

HyperemesisGravidaru. You probably have hyperemesis gravidarum. If you do not get enough calories it affects your baby's nutrition as well. Talk to your OB and see how he/she can help you with this. You may want to try sucking on dry salted ginger chips. Or drink fresh ginger juice 1 teaspoon of fresh ginger juice in 12 oz of flat 7-up.