HCG 25.6miU/mL

As

Had a blood test today to confirm pregnancy and this was the lab result. Seems so low or because it’s so early? Per the app I would be 3 weeks and 6 days today. I also have two positive pregnancy tests. Should I be concerned? From what I’ve read 5 or below is not pregnant, 6-24 is a grey area to monitor, and 25 or more is confirmed pregnancy.