I had a HUGE beta during my first pregnancy followed by a miscarriage.

Hang in there. Everything crossed.

My situation with my daughter was almost exactly like this. It was a fresh cycle for me. My beta at 14dpo came in at 40, My second came in at 60. They kept limping along in a less-than-doubling fashion. My first US at 5 weeks and change showed a blob and yolk sac. In spite of this underwhelming start, my RE didn’t seem phased in the least after seeing the US (he was concerned it was ectopic). At 7 weeks and 4 days or so we saw a strong heartbeat, and the pregnancy went on from there without a hiccup. I hope that your story has a happy ending too. Some embryos just get off to a slow start. I’ve got everything crossed for you.

For whatever it’s worth, my one pregnancy was a beta of 123 17dpo (i.e. retrieval) on a fresh IVF cycle, and he went on to be about the most boringly uneventful pregnancy imaginable (in a good way!), arrived full term and full sized, and is registered to start kindergarten this coming fall. I didn’t even get a u/s done until I was about 8 weeks along (I was traveling between the beta and then). I hope 6 years from now (am I doing the math right? But you see what I mean … after a duration of time has passed similar to what has passed in my world since those first faint double lines) you’ll be putting a post like this on someone else’s blog who needs to see a success story with a similarly sketchy starting point. And yes, my sense was my odds were 50/50 too, at that first moment. Hang on, and I hope you can take gentle care of yourself until things start to seem more certain, even if that takes 9 months.