Pregnancy scare! HELP!!

I recently got on birth control around December 6. I have never missed a day or was late. My boyfriend recently took my virginity.  And since I am on birth control, he cums inside of me.   Anyway, when I got to the sugar pills, I never got my period and I'm still waiting. When I first took my birth control in December, I got my period 9 days early and I was still on the active birth control.  I kept taking my birth control but I skipped my sugar pills because By the time my period ended, I would be taking the sugar pills. It has been nine days since I started this month sugar pills.  My boyfriend wants me to take a pregnancy test and I probably will but I'm scared. If it comes back positive, my parents would disown me and I'm only 18.  My boobs are getting tender and my discharge looks like how it usually does right before I get my period. I am not that well educated on birth control because I just started taking them. I think the way I took my birth control last month messed up my entire cycle. Do you guys think I'm pregnant? Please help.  Oh and not to mention, I have had no signs of pregnancy. Like nausea or cramps.