Cycle day 104, not pregnant. some cervical mucus with a few small streaks of blood and like pink. possible indicator my period will start soon?

Possibly: It depends on why your period is so late. Did you stop Depo or birth control pills? Your information says you are pregnant but you say you are not. Were you breast feeding? At any rate, this could mean your period is about to start.

Period late: I see you have been on Depo-provera and that may make you have scant or no period. Your period may be trying to start bui if it doesn't you may want to check a pregnancy test to be sure