pregnancy symptoms

when do you typically start experiencing pregnancy symptoms? I'm 7 days before my period is due without any symptoms...yet. we've been ttc for over a yr. our 1st pregnancy we weren't trying & i honestly don't remember. just curious. change in cm? is nausea tge biggest indicator? last month i could of sworn i was bc of my breast tenderness...but ended up getting my period. Is it weird that I'm praying to be nauseous??