Should I be worried?

Michaela • Mammy to 2 year old 🧒🏻 .. Baby no. 2 due November 2020 👶🏻

So i got a positive on a clear blue digital on Thursday (the day of my missed period). Today I tested with a strip and it’s the faintest line.. i can barely make it out! Shouldn’t my Hcg levels have risen more by now? Should I be worried?