tmi!!!

So I have a question. I am 7 days last on af today. Took a pregnancy test yesterday and absolutely nothing. We have been ttc for about 3 months but more of a no pressure sorta thing (I don't want it to become a stress factor coz my husband is working insane hours right now). And the past few days I've had this creamy cm which is new for me. Af has been pretty consistent since I got off bc. Could it just be too early to tell or am I just one of the lucky ones who's af decides to randomly change? 😫