i would wait to test until af is late as well...no reason to get yourself concerned about a bfn if it could be false anyway...you are not going to get any more pg by testing early! realize that pg is in months, not days, so if you can hold out...do! i know i know, easier said than done
as for pg symptoms...there are just too many to list on here. check them out online (just google pg symptoms) or scroll through the forums...its all us ladies talk about during the 2ww
goodluck hun, and try try try to practice patience, because in this 9 month wait that is sure to come, you are going to need it!!!