Blood Work HCG

Dakota

I had blood work done yesterday to see if I am pregnant. The nurse called today and said that my level was elevated, but they want me to come back in tomorrow to make sure it is doubling like it should. Is this normal or do you think they are worried about the level it is at?

*Background I had a miscarriage at 12 weeks in March. I have POAS for the last 3 days and the line is getting darker.

Thanks for any help, just feeling extra paranoid this pregnancy!