This early?

Kaitlin

I got a call from my doctor today stating that my hcg levels are doing great, but they want me to come in for an ultrasound tomorrow. I am 4 weeks pregnant as of today. My hcg yesterday was 143. I have a history of two ectopic pregnancies in the last year and a half. Basically they want to make sure they can't see another ectopic.

Had anyone had this before? I've never heard of them doing an ultrasound at all before 6 weeks or 1500 hcg levels.