Dr. Seems worried

I had my ultrasound last Friday and I knew I was still early but due to my weird cycles they thought I was over 8 weeks already but my ultrasound says I'm only 6 weeks and a day. Which is right on track with when we BD last. But my doctor doesn't know that because I don't see her until May 11th. My doctor made me come in today to get blood work done to check my levels and then again on Friday to make sure they're going up. Anyone else in the same boat?