Unmarried and pregnant

I'm almost 15 weeks pregnant and I'm about to start back at my job in two weeks. I've been away in the military, but stationed 20 minutes from home, and I'm home early because of my pregnancy. I live by the ways of marriage before pregnancy and so does everyone at my job. I'm 25 and in a 6 year relationship and we live together. I want to know what are the best ways to handle people's opinions about me being pregnant before marriage? I know patients are going to ask about my HUSBAND. Which we aren't married. Should I correct them and how should I handle the questions about not wanting until marriage?