Is it possible to not know youre 3 months pregnant?

yes it is possible to know whether you're 3 months pregnant through symptoms such as that of: morning sickness; missed cycles; swelling of the abdomen; frequent urination; swelling and tenderness of the breasts; bigger appetite; and weight gain....if you experience none of these symptoms...one way is to get a home pregnancy test or see a doctor...but it's most likely that you will have at least one of the above mentioned symptoms.