Hcg levels

Sierra

So I’m about 5 week my hcg levels seems a little weird to me

8/19 190

8/23 470.7

8/25 777.0

8/27 2,161.1

They were doubling every 65-66 hrs now all the sudden it spiked up to double time of 32 hrs is this normal I heard of women hcg levels doing this and having an ectopic I’m kinda nervous my ultrasound isn’t until 9/15 🙏🏽 any insight will help I’m a nervous wreck after 2 back to back miscarriages