My HCG tests aren’t getting any darker. Is that okay?

Allison • TTC baby #1 Since 2016. Diagnosed with MFI in August 2018. First IVF round started in November. Transferred TWO, 5-day blastocysts. Positive beta on 11/27 (426). Next step is ultrasound on 12/11.

I’m 10 days past a 5 day transfer with <a href="https://glowing.com/glow-fertility-program">ivf</a>. I’ve consistently gotten darker results but they’ve started to stay consistent. Is that okay? My beta blood test is not until 11/27