Pregnancy??

So I’ve been on the pill since August. It made my periods lighter and when I first started it I wasn’t sexually active. I started having sex with my boyfriend at the end of November and I haven’t gotten my period since November 14. On top of the Birth control he also wears a condom. I took a test after my first missed period on December 13th and another one the next day on the 14th. I took it right when I woke up and they both came back negative. It’s now December 25th and I still haven’t gotten my period. I have no other symptoms for pregnancy besides the missed period. I’m gonna take another pregnancy test soon but until then, I am so nervous. Any advice/tips would help ❤️❤️