Five weeks hcg levels

Ka

I just had a blood test at what should’ve been either 5 weeks 1 day or 5 weeks 2 days. Glow says I’m 5 weeks three days today & my other app says 5 weeks two days which both are the same lmp. My dr’s nurse called saying my levels were 1696 as of yesterday & that my dr wants to do another blood test in a couple days. Are these numbers low?