Help!! Where's my period?!

Love
So month of December is almost gone and I have not gotten my period I stopped taking my bc pills because I missed two days.. I had sex with my bf and we didn't use protection. Is it too soon to find out if I'm pregnant? I don't have a problem being pregnant in financially ready and love him... But not married nothing new but still (old fashion parents) lol I did have brown spottings for a few days could that have been my period??? Maybe this has happen to any of you ladies let me know!