I am 38 years old and have a 4 year old son. According to my doctor, I am 7 weeks pregnant. According to my 6 week u/s, there are 2 sacs, but only 1 has developed. According to my 7 week u/s, there is no change... no fetal pole or visible heartbeat. I've had some mild cramping, but no spotting or bleeding. I'm being forced to wait through the holiday weekend (pure torture) for my doctor to correlate my blood work with my ultrasound to see if my numbers are going up.