Hi i am almost 3 weekslate for my period. i have done tests all negative. i have pregnancy sympoms; nausea, always tired, moody, cramping, sore breasts and have white milk spots and lower back pain. is it possible for me to be pregnant and not show. i have 2 children and sympoms are the same when i was pregnant with them. i done my last pregnancy test 3 days ago it was first response test but negative. thank you for any advice as i am worried.