I Want A Baby!

Hello I have been trying to get prego for atleast six months now, I refer to "the my days" app on my andriod phone, and am usually more sexually active around the ovulation/fertile days however I have I ave notie since my last period Nov. 7-13 I experienced mild bleeding between Nov. 20th-24th then it Stopped so here I am on Dec 4th waiting for this months period which is usually around every 28 days like clock work. and to my surprise, nothing!, I have taken a  prego test and it was negitive. now my abdomin is a bit tender and I feel like my period is coming but It is nothing but a slight bit of mucus which is pretty light in color that is hard to distingish it being light brown or light pink