No, you're not unreasonable at all! I totally understand.
I had similar issues, I only managed to get ONE beta test out of my doctor, who said it was normal for the DPO and then I was on my own.
And to get my ultrasound I totally abused the fact that I'm supposedly 8 weeks. (more like 6w4d when I had it, measuring at 5

)

Glad you got it though.
And frankly, after 10 losses they should be calling YOU to remind you to schedule!