There are a few common symptoms that let you know that you are pregnant.
Nausea or morning sickness generally wears off at the 12 /13 week point. Not all women feel nauseous and different pregnancies can produce different symptoms.
So these are the most common signs of pregnancy, some of them can be confused with PMS so the more you have the better. If you think you may be pregnant, take a home pregnancy test or see your doctor and find out for sure. Then, take good care of yourself.