just turned 1. As you can see, it dropped, leveled off, & then began to rise but very slowly. My betas were extremely low, yet the pg. turned out to be viable.
Many REs look for doubling every 48 hrs., but please know betas are supposed to double every 48 to 72 hrs. Hang in there & I hope you get good news with your 2nd beta.
Here were my betas:
11 dpo 26
13 dpo 53
16 dpo 39
18 dpo 41
20 dpo 72
23 dpo 179
27 dpo 559
30 dpo 921
31 dpo - "possible" sac seen in uterus
33 dpo 2671
37 dpo (7w2d) - last beta drawn at 4238 - sac with strong heart beat confirmed by u/s, but abnormally shaped - RI/ob again said likely not viable
40dpo (7w5d) - u/s with peri. - measuring 6w6d - heart beat strong - sac looked fine - everything looked fine - I did not believe her, though, for many, many weeks after this