However, tourism is by far the number one industry, and Venice is one of the most-visited tourist destinations on the planet. Specifically, it ranks 29 among world tourism cities and sees around 18 million visitors every year.
Morning sickness is nausea that occurs during pregnancy. The name is a misnomer, however, since morning sickness can strike at any time of the day or night. Morning sickness affects a large proportion of pregnant women. It is most common during the first trimester, but for some women morning sickness lingers throughout pregnancy.
It really just depends on the person and their pregnancy. I think most of the time it kicks in sometime between 6-8 weeks. Both of my pregnancies, morning sickness kicked in right around 6 weeks.