Missed period

Help! Unfortunately my husband and I have not been intimate since November 14 :( we have both been very sick, a trip, family in town etc anyway... I had a 3 day period starting November 27th, right on time. Well now it’s the. End of December and I am 3 days late. Remember we have not had sex in December at all. My periods are always on time. We have been trying, but not stressing over it because we already have a 6 year old. Is it possible that I am pregnant?

I have done some online research and I am getting mixed answers.