Has anyone had a low first Hcg beta at around a 6 and the number kept doubling and everything was okay from there

Ky 8-15-17👼🏼 & 10-28-17👼🏼 Pregnant with my🌈💕

In July I did my first round of letrozole and trigger shot and got pregnant but miscarried at 5 weeks. This past month I did my second round of letrozole, trigger shot, and progesterone suppositories and had a beta done on Wednesday and it was 3.88 but they had me come back two days later which was today because my test Wednesday could have been early. And my beta today at 14dpo went up to a 6 something and anything over 5 is positive she said. Then I go back Monday morning to check to see if it's raised some more. I really hope and pray that this is my rainbow baby. I'm just trying not to get my hopes up. A 6 just seems low to me /: I'm hoping the number doesn't matter as long as it's doubling.