HCG 207

I'm so nervous. 1 week ago I found out I was pregnant and the next day I started spotting brown blood. It's been 7 days now with brown spotting. My dr said it could be miscarriage or ectopic or even normal. I've been getting my levels tested every 2 days the past week. Sunday I got them tested and they were only 207. I was 4+6 the day I tested. I'm so afraid it's an ectopic. My obgyn won't tell me the results from Friday (I have to wait to speak to my dr) but I go back in today and I'm really hoping they rised exponentially in the past 2 days. I had an ultrasound at 4+2 but there was nothing to be seen anywhere.

According to the lab I should be somewhere between 1000 and 50000 for 4-5 weeks???