I have a two year old son, I've been off of the depo shot for a year but my husband and I didn't start "trying" to conceive until about three months ago, my periods are always on time, but I'm three days late, I have taken three pregnancy tests since two days before my period was suppose to start. I've had only a few signs of pregnancy, fatigue, nausea, and frequent urination. Nothing compared to my last pregnancy where I was constantly sick. But could I be pregnant? What could be going on either way ?