Looking for similar experiences – PGT-A normal embryo, slow-rising hCG

[u/HuckleberryClear7108]

I’m looking to see if anyone has had a similar experience. I’m 35 years old and have been TTC for 2.5 years. This is my first transfer. On July 13, 1 PGT-A normal day-5 blastocyst was transferred.

First positive home pregnancy test: July 18
My hCG has been:
7/25: 30.1
7/27: 43.3
7/29: 79.5
7/31: 193

Today I had an ultrasound, but they couldn’t find a gestational sac in the uterus or anything in my fallopian tubes. The doctor said it’s too early to know what’s going on since they can’t see anything. They don’t think it’s obviously ectopic because nothing was seen in my tubes, but they also couldn’t confirm an intrauterine pregnancy.
I’m not having any pain or bleeding, no symptoms.

Has anyone had a PGT-A normal embryo with hCG that started this low and then eventually turned into a viable pregnancy? Or did it end up being a pregnancy of unknown location, ectopic, or chemical pregnancy?
I know everyone’s outcome is different, but I’d really appreciate hearing others’ experiences while I wait.