Implantation Bleeding or Pre-Period Bleeding?

Today at work I started having some brown spotting that concerned me. Called nurse and they said it could be completely normal or could be my period starting. As soon as I got home from work I started researching implantation bleeding on-line and was relieved to find that what I was experiencing seemed to fit with the signs and symptoms of implanation bleeding. Yeah! Was this the sign we were looking for to confirm that all is well? Did all of our prayer work? Emotions are up again and hope restored. They really weren't kidding when they said this IVF thing would be a rollercoaster ride.