As in the first week after conception (because technically, that'd be week 3 of a pregnancy since the two weeks before pregnancy count in the 40 week countdown)? Most women don't experience symptoms until closer to 6 weeks (4 weeks after conception) however, the usual early pregnancy symptoms can show up immediately (every woman is different). Those would include PMS like cramping and bloating, nausea, dizziness, boob tenderness, fatigue, etc. Usually in early pregnancy, you feel like you are going to start your period any minute, only it never comes.
at 11:49 AM on Apr. 15, 2011