Four month pregenacy still vomiting sometimes, when vomiting will be end?

Hyperemesis gravidar: Hyperemesis gravidarum is a condition of pregnancy characterized by intractable nausea, vomiting, and dehydration and is estimated to affect 0.5-2.0% of pregnant women. Hopefully you n/v is not that severe. It usually happens more in the first trimester, so hopefully yours will start to resolve, but on a rare occasion it can persist. Keep regular appts. With your OB and avoid dehydration. Best!