Miscarriage hcg level

Kelley • Hi I`m Kelley I`m happily married to the love of my life. I`m so blessed I`m a Mommy to the Sweetest Baby Girl💕🙏🏻

My doctor just called my hcg levels are still high there at a 1700 they should be down to less then 5 so in two weeks I have to go back in for more blood work I had my miscarriage May 22 and then I had my levels checked June 4th and there still not down why would they still be high