Hey mommas! Jw if theres anyone else out there with low, but growing hcg levels?

Was due for period on valentines day.

Nothing happened so got a faint but visible blue line on Thursday the 18th. Then tested again during the day and got a bfp.

Got bloods taken Friday the 19th.

Results by Monday the 22nd. Hcg level was 16.

They tested again that Monday, results came back at 30.

Anyone else having similar and end with a happy baby? Or even just in the same boat??