Jan 25, 2009 first off, I am trying to conceive. If i am pregnant, i will be four weeks today. ( i am waiting for AF and trying not to get my hopes up) I've noticed very SLIGHT tenderness, (it's there but not as bad as i usually get before my period) my breasts feel fuller, and heavier. the nipples are bigger, and show more first off, I am trying to conceive.