Hi M., I've been in that position, so I know how hard it is. And I had had two previous miscarriages, so it was even harder to stay positive and relaxed. Given the irregular cycles and such an early ultrasound, I would give it a little time before you assume the worst. As far as telling people about the pregnancy, our philosophy was always that conception itself was worth celebrating, so we always told people right away (family, close friends). Then if all went well, more celebration. And the times it didn't go the way we hoped we had the support and understanding of those family and friends to help us through the grieving. Otherwise no one would have understood what we were going through, and it would have been really lonely. I will be praying for you.