Could I be pregnant?

Shannon • 45 yrs old, single, and finding what makes me happy and content in life. I am a very understanding and caring person. I enjoy life and the small things. I like anything outdoors, camping, crafting, reading. Mom to a cat named Bandit.
I am 38 years old and have never had a baby or been pregnant. I have been on the birth control pill religiously for years. My husband and I do not use any other protection except me on the pill. 
I was in my pill pack inactive week last week and am now four days into a new pill pack and have not had a period. Could I be pregnant? Should I stop taking the pill incase I am? When should I do a pregnancy test? I'm not worried because if I am pregnant so be it because we were going to start trying in the next 6 months to a year.
I have had a lot of fatigue, nausea and vomiting lately. Especially when riding in a car and early mornings.