Pregnant?

Gwen

I have been steady having sex without a condom with my boyfriend about 4x a week, I was supposed to get my period Dec 17th, it is now the 24th and i still do not have it. Should I be worried about pregnancy or is it normal to miss a period cycle? I’m not sure that I’ve missed it before like this. No pre cramps or anything. And we are at the point where we are comfortable and happy that if I am, everything is ok. Just wondering what you guys think?