I'm late!

Sooo.... My husband and I have decided to try and have a baby. I came off the pill last month after being on it for 6 years. I am currently now 6 days late. I tested before my missed period and three days after it was late and they both came back negative. I'm so confused! I was always very regular when off the pill. I'm not sure if my body is just not producing enough of the hormone to say I'm pregnant or if the pill has messed me up. Had anybody ever had the pill mess up their cycle? Help!!