Hcg level question! Concerned?!

Kayla
Hi all! At 5w 1d my levels were 1174. My nurse told me they were looking for it to be around 1500 and just said she wants to repeat labs this coming Friday. Does anyone know if this should be of concern? Can it be normal to not have them rise as fast? I can't stop stressing myself out and thinking that something is wrong. My first two blood tests came back much higher than they expected so until this third blood test everything looked great. Any insight would be greatly appreciated!