eli5 Why do some women get “morning sickness” when pregnant and others do not? Why do many only have it in the 1st trimester but some experience their whole pregnancy?

Question

eli5 Why do some women get “morning sickness” when pregnant and others do not? Why do many only have it in the 1st trimester but some experience their whole pregnancy?

In: Biology

Answer 1

Would like to add it’s called morning sickness but you can feel nauseous for the whole entire day or throughout the entire 1st trimester/pregnancy