How soon do pg symptoms begin? I have felt "cruddy" most of the afternoon. I don't know if it is because AF is due tomorrow and my nerves are on edge or what, but I just haven't felt good this afternoon. I have had a headache, and slight heartburn. Do you think this is nerves or can symptoms really start this early? I also feel warm. I have had no nausea, no darkening of bbs (nipples) to speak of, and no other symptoms. What do you think? BABY DUST TO US ALL!!!!!!!!!