Boom, Boom, Boom

I rent a fetal monitor when I am pregnant (from a place in Arvada, CO!). I just heard the baby's heart beat for the first time. It was 158. I can't remember if I am 13 or 14 weeks. Does anyone remember? I had the kids listen. I think on a scale of 1 to 10 for a neato factor, they would not have gone over 6. Oh well.