14 days late

Okay so I had sex on New Years. My period was supposed to come around the 12th. (We used protection) around that time I was late I was very stressed. Also I noticed the same amount of discharge I usually get around when I ovulate. That happened maybe 1 or 2 weeks after my period supposed to come, but the thing is I was supposed to been ovulated around the 24th of dec. anyways, I took a test on the 20th & 22nd. Both said negative. I don’t think I have any symptoms but my tummy does look kind of big .. or maybe I’ve just been eating a lot. But still no period. Any help ?