How quickly do you start to see signs of pregnacy?

1-2 wks after concep. Some people may feel the effects of early pregnancy as early as 1-2 wks following conception...That is before missing your period. Quite a few people, on the other hand, have no symptoms of pregnancy at all beside missing their period and later on with belly getting bigger etc. So, if you want to know, check a pregnancy test. Take your prenatal vitamins... Consult doc. Good luck.