What changes occur in your body during early pregnancy?

A lot!: There are too many changes to list here that happen on every level in your body! Some women have absolutely no symptoms whatsoever. Some women become violently nauseated and vomit, have breast tenderness, sharp lower pelvic pain (associated with uterine growth) and may even notice their clothing fitting different. Get the book "What to Expect When You're Expecting". It's a very handy resource!