Beta Numbers

On 9 dpt my beta number was around 200.

On 13 dpt my beta number was 1334.

On 20 dpt my beta number was 7,491.

On 24 dpt my beta number was only 11,283.

I am spotting and bleeding for a little over a week. Did this happen to anyone and still have a viable pregnancy? I’m concerned bc my hcg levels didn’t double.