Is an HCG level of 22 on 12 DPO normal? Help!

I got a positive test on 10 dpo. I could have ovulated one day later than the App shows though. Anyways, based on the app, I had a blood test at 12 dpo. It was positive with an HCG of 22. They are retesting me in 2 days to see if the number doubles.

I took a Early First Response again this AM & it looks lighter than yesterday. But my FMU was so so dark. I also took a Wondflo pregnancy test out of the same FMU & the test strip looked a little darker or the same as yesterday. So confused.

I’m so worried! Has anyone had their HCG double with an initial test around 22 HCG at 12 dpo?