Linda Ann, age 16, writes:
at how many weeks can you have morning sickness? i am four weeks along and do now.
Dear Linda Ann,
If we count from the gestational age (which begins counting from the end of your last period), then morning sickness (particularly nausea & vomiting) usually begins around the 6th week of pregnancy. This would then be 4 weeks since conception (i.e. when you had sex and the egg was fertilized).
This nausea & vomiting then tends to be one of the first signs that a person is pregnant; however, it’s important to remember that many never experience this (and they are certainly lucky!).
Hope this helps,