When you have morning sickness, what you do mostly is vomit when you smell something you don’t like, vomit when you taste something you don’t like and vomit again when you feel like doing so. Other than vomiting, pregnant women experiences dizziness, illness and sometimes because you are not feeling well, all you do is sleep the whole day.
It is necessary to consult your doctor if this continues as it may be a life threatening already especially if you vomits all the time, it may lead to dehydration. It may also harm the baby but with proper medication, it will keep your baby safe.
It does not mean that since you have morning sickness the first time, you will still have it on your second pregnancy. Many women say that they have an easier pregnancy compared to the first one. And some says it is easier with their first pregnancy. Don’t be afraid, that is just part of you being a mother.